What's a negative plus a negative, and a negative minus a negative and a negative plus a positive?
491966
Negative plus negative is ALWAYS negative.\n(-5) + (-3) = -8\n\nNegative minus negative may be negative, positive, or zero.\n(-5) - (-3) = (-5) + 3 = -2\n(-5) - (-5) = (-5) + 5 = 0\n(-5) - (-8) = (-5) + 8 = 3\n\nNegative plus positive works the same as negative minus negative. See the examples above.
436335
To find the opposite, or the additive inverse, just change the sign to the opposite sign.\nIf it's positive, then make it negative.\nIf it's negative, then make it positive.
307451
Try\n\nhttp://www.purplemath.com/modules/negative.htm
887284
Subtracting, and adding a negative #, are the same thing. So this equation can also be expressed as:\n(-5x + 6) - (-2x + -7)\nThe negative after the last part of the function, effectively reverses the negatives inside the parenthesis:\n(-5x +6) + (2x + 7)\nFrom there, since this is just addition and subtraction, you can just remove the parenthesis:\n-5x + 6 +2x + 7\nCombine like terms and you've got:\n13 - 3x
218778
The answer is -1\n\nIn Algebra, anytime you subtract a number, you change the number following the minus sign into its inverse (negative to a posotive and positive to a negative) and then add.  Therefore, your problem becomes -12+11, giving an answer of -1.
1162861
Because when you multiply two negative numbers the negatives cancel each other out and become positive.
970378
The additive inverse is what you add to anything to get zero.  That means it's the negative!  Of course, the additive inverse of a negative (negative of negative) is positive.\n\ne.g. -4 + 4 = 0 and so each of 4 and -4 is the additive inverse of the other.
970375
to SUBSTRACT a negative integer means to ADD the absolute value.\n\n-45 -(-34) = -45 +34 = -11\n\nokay ?
78925
well, you look at the biggest digit, not including the sign.  lets say it is -7-5.  7 would be the biggest.  Then, see if its subtract or add.  This is add.  It has to be negative, since its a -7.  Another example is 7-9.  9 is the biggest, and since its a negative, the answer is a negative. One last one.  -2+9.  9 is the biggest, and since its possitive, the answer is positive.
928992
It is not a + sign underlined.It is plus and minus sign put together indicating that the result is either positive(+) or negative(-).In fact when when we find out a square root of any number say 16,the answer may be +4 or -4 because +4^2is 16 and -4^2 is also 16.Therefore square root of 16 is plus-minus 4 that is eithr plus 4 or minus 4.
623110
The same way you do algebra with regular numbers. Negative numbers are just the same.\n\nRemember that x - 3 is the same as x + -3.\n\nRemember the basics:\n\nAdding a bigger negative and smaller positive equals a negative number.-9+5=4\n\nAdding an equal negative and positive equals zero. -3+3=0\n\nAdding a smaller negative and a bigger positive equals a positive number. -3+12=9\n\nAdding two negative numbers equals a negative number. \n-3 + -4 = -7\n\nAnd remember that a negative number is the same as a positive number multiplied by -1. (ex: -3 = 3*-1)
681111
let me solve ur example first, then i will explain it to u.\n-5-(-15)\n-5+15\n10 is the answer. \n\nIf there r two negative together, make it positive.\nUse the following formula:\n- -= +\n- += -\n+ += +\n+ -= -
507220
If the signs are the same (pos-pos or neg-neg), you get a positive.\n\nIf the signs are opposite (neg-pos or pos-neg), you get a negative.
528390
minus should be negative and iy doesnt say if it is C or F
948937
(-3,-3);(-2,0);(-1,1);\n(0,0);(1,-3)
388708
Besause when you multiply two numbers you are actually performing an addition, for example:\n\n2(-2) or 2*-2 What this means is that you have to add -2 twice: (-2)+ (-2) which = -4\n\nwhen the multiplication is -2(2) you are to take away 2 two times (subtract): -(2)-(2) = -4
562003
a minus sign with a dot above it and a dot below it.\n\nMENTALLY SUPERIMPOSE THESE TWO CHARACTERS \n:-