Plus 12 plus -13 plus plus 1 can be rewritten in mathematical terms as: 12+(-13)+1 or 12-13+1 12-13+1 =-1+1 =0
6 + 12 - 5 = 13
6+8=14
basically you asked what -28+21 which equals -7
yes it is
12 + 5 equals...
The commutative property.
13+-12--5 = 6
13+(-12)-3 = -2 Yes, that is correct.
-5x + 13 = -12 -5x = -12 - 13 = -25 x = -25/-5 = 5
-90
-13 Plug 5 in and multiply it by -5 which equals -25 12 - 25 = -13
yes! 11+2=13 12+1=13
x = 3 and y = 2
6
6
2x + 1 = 13; 2x = 12; x = 6