-15
15
12t + 15
-3 + -12 = -15
5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9
-15
-15
-15
It is: 15+(-32) = -17
15
X2+Y3+15 All you can do is simplify it.
-12 + 6 - 10 - 6 +15 = -7
12t + 15
-3 + -12 = -15
2x + 8 + x = 2x + 15 simplify 2x to both sides since they have the same sign8 + x = 15 subtract 8 to both sidesx = 7
5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9
10/270 + 15/270 + 27/270 = 52/270 = 26/135