how to simplify subtracting fractions with variables?
39071
['Find a common denominator by multiplying the two denominators together.', 'Manipulate the fractions so that they both have the common denominator.', 'Once you have a common denominator in both fractions, subtract the numerators.']
535080
['Write the conversion as a fraction (that equals one)', 'Multiply it out (leaving all units in the answer)', 'Cancel any units that are both top and bottom.']
455615
['Convert the mixed numbers to improper fractions.', 'Use the algebraic formula for subtraction of fractions: a/b - c/d = (ad - bc) / bd.', 'Reduce fractions and simplify if possible.']
1213730
You can isolate one variable in one equation, then substitute it in the second equation. Or you can manipulate one of the equations so that you have equal values of one variable, then subtract one equation from the other, eliminating the variable.
1396675
['Things to remember:', 'Step 1: Find a common multiple of the denominators.', 'HINT: The easiest way to do this is multiply the denominators together.', 'Step 2: Multiply the fractions so that the denominators the same.', 'Step 3: Add or subtract the new fractions.', 'Step 4: See if you can simplify.']
246405
Subtracting mixed fractions? You could first convert each to an improper fraction. If they don't have common denominators, then find a common denominator and use it to rewrite each fraction. Then, subtract the fractions and simplify.
979469
To find the difference of two fractions with different denominators, rewrite the fractions with a common denominator before subtracting. Here is a subtraction problem. The fractions in this problem have different denominators, 8 and 4. Rewrite the fractions so they share a common denominator.
943386
Subtract, don't add, the fractions. The correct answer is . Subtracting mixed numbers works much the same way as adding mixed numbers. To subtract mixed numbers, subtract the whole number parts of the mixed numbers and then subtract the fraction parts in the mixed numbers.
1082126
['Step 1: Make the denominators are the same. Find the common denominator. ... ', 'Step 2: Rewrite the fractions using the new denominators. In order to change the denominators, you must multiply the numerator and the denominator by the number it took to change the denominator.', 'Step 3: Subtract the numerators.']
45783
Subtracting mixed fractions with unlike denominators? You could first find a common denominator and use it to rewrite each fraction. Then, subtract the whole numbers and fractions separately.
73648
['You must have a common denominator.', 'To find the Least Common Denominator (LCD), take the least common multiple of the individual denominators.', 'Express each fraction as a new fraction with the common denominator, ... ', 'To add fractions with the same denominator:']
589742
['If the number of seconds being subtracted is larger than the original seconds, you must borrow some seconds from the minutes: Subtract 1 from the original number of minutes. Increase the number of original seconds by 60.', 'Subtract the seconds.', 'Subtract the minutes.']
24800
To subtract mixed numbers, subtract the whole number parts of the mixed numbers and then subtract the fraction parts in the mixed numbers. Finally, combine the whole number answer and the fraction answer to express the answer as a mixed number. Subtract. Simplify the answer and write as a mixed number.
236
['Find the least common denominator.', 'Make equivalent fractions using the LCD.', 'Add or subtract the numerators.', 'Simplify the result if necessary.']
767353
['Build each fraction (if needed) so that both denominators are equal.', 'Add the numerators of the fractions.', 'The new denominator will be the denominator of the built-up fractions.', 'Reduce or simplify your answer, if needed. Factor the numerator.']
950237
['Add or Subtract the same value from both sides.', 'Clear out any fractions by Multiplying every term by the bottom parts.', 'Divide every term by the same nonzero value.', 'Combine Like Terms.', 'Factoring.', 'Expanding (the opposite of factoring) may also help.']
616349
['Click inside the cell where you want to display the result of the subtraction.', 'Type =B2-C2, but replace B2 and C2 with the cell locations that you want to subtract.', 'Press Enter on your keyboard when you are done to display the result in the cell.']