-8 plus 15 = 7
x = -7
M=15
'x' = WHAT x + 15 = 23 Subtract '15' from both sides x = 23 - 15 x = 8 The answer!!!!!
5 + -8 = 3 + 12 -3 is not equal to 15
It is the property that equals plus equals are equals.
-8
1over3x+x+x+8+x=15
(-15) + 23 = 8
8+7 = 15
no 15
n = 8
yes
-1
x = -7
M=15
X=7
4 + 15 = 19 + 8 + = 27 (alterative)