What does an equal sign with three lines instead of two (=) mean?
477881
It means "is the same as" rather than "is equal to"\n\nFor example x=2 means x is equal to 2 but only in this case, not necessarily for other cases.\n\nWhereas an equality with three lines means that it is always the case, by definition. Can't think of a good example of it though.
356128
Its alt+3, and FYI Alt and a number is a way of printing orginal symbols from ASCII text, (first printer data kinda thing)
942085
u can do alt + 3 = ♥\nor <3\n\nxox <3 <3 ♥♥♥♥ <3 <3
716853
in order to avoid confusion between x and the multiplication sign brackets are used for indicating multiplication
747950
It's many years since I did maths but shouldn't there be an = somewhere? And isn't there normally "y" too? I thought it would be fun to stretch my brain for a change but...Am I being obtuse?
817396
Since B is in the middle, lets set B as 0 for example purposes.  A would be any negative number (A<B) and C would be any positive number (B<C).  Since there are no 'or equal to' symbols, A<C.  This is true for all possilbe cases.
1032953
I am assuming the sign between 3x and 7 is a + sign since two equal signs in one equation does not make sense. \n\n2x - 2(3x + 7)= x -5\n2x - 6x - 14 = x-5 [multiplying 3x + 7 by 2]\n2x - 6x -x = -5 +14 [taking all the x to same side]\n- 5x = 9 \nx = -9/5 [deviding both side by 5]
976275
2x + 28 < with a line under it _ <_   6x\n\nsorry don't know how to add that special character in, but it is only one thing like the +\n between the 28 and 6
723136
<3\n\nIt's an arrow pointing to the left, followed by the number 3.  Enjoy!
428762
8r\n2rt\n2\n\ni believe you only take the number (coeficient) and the letter (variable). The signs is another issue since is only operational.
1170365
If I recall, it's something along the lines of ALT + 3. It's a single number, lower digits. I'm on a laptop, so I can't test it.
21689
A - sign outside (  ) changes all the signs inside the (  ). \nn^2   -3n   +1 \n-4n^2  -n  +5   Stacking the values in columns helps combine the 'like' terms, which have the same letter(s) to the same power(s)\n\n-3n^2 -4n +6
366161
well...after transfering the "+7" in the right of the equal sign and which becomes "-7"(the sign is changed from "+" to "-") we have on the left "2x" and on the right "24-7" which is "17". After this we divide "24" at "2" which comes from the "2x" in order to find "x" and the result is that "x=8,5" or "x equals 8,5".
954015
I answered this question a few weeks ago. The answer is to draw a forward slash (/) through the equal (=) sign changing it to a not equal sign. This gives the true inequality\n5+5+5 not = 555.:
365207
|b+3|<=4 means\n-(b+3)<=4 and so b=-7 which is smaller than the value b=1\n\nYou have to consider the smaller value when you have 2 options as per the question.\n\nModulus means both + and minus.\n\n|7| means + or - seven.\n|b+3| means + or - (b+3).\nYou gotto consider the smallest of two in the question...and so go for the negative value which givews you b=-7.
329632
{x: x inequal to 2}\nor\n{x: x=/= 2}
954759
The || signs represent absolute value. This is a term that means the distance of a number on a number line to zero. Absolute value is thus always positive. For example, |2| = 2 and |-2| = 2.\n\nFor equations where you are solving for a variable and one side is absolute value, you must solve the variable so it can equal both the negative and positive values. Using the example above, this means we have to set the equation so that x+3 equals both 4 and -4. This is because regardless of the negative or positive part, it will change into 4 because it is absolute value. Here is how you do it:\n     |x+3| = 4\nx+3=4\nx=1\nThats the normal way, as if there were no absolute value marks.\nBut we have to account for the negative part too:\nx+3=-4\nx=-7\n\nNow to prove this is true:\n         |x+3|=4\n|(1)+3|=4\n|4|=4\nThe negative too:\n|(-7)+3|=4\n|-4|=4\n\nI don't know how the second equation would work, partially because I don't know the full equation. Perhaps you meant |2b+9|=0 ? Otherwise, you can't do anything further. I hope I explained it well.