Because that is how negative numbers are defined.
3x + 6 = 27.Subtract 6 from both sides: 3x = 27 - 6 = 21.Divide both sides by 3: x = 21/3 = 7.x = 7
(-3) - (-7) = (-3) + (+7) = (-3) + 7 = 4
- 3.5 plus 10.5 equals 7 is one possible answer.
A negative... as in (-5) + (-7) = (-12). A negative timesa negative is a positive... as in (-5) X (-7) = (+35)
It equals negative 25!!
negative 15
No.
This equals negative six.
89
11 + 7 + 9 = 27
5
-1
If: A+7 = -3 then A = -10
Negative 7 -7
Negative 11
well,,,,,,,,. it doesnt!