2x+7=-8x-9+10
2x+7=-8x+1
2x+6=-8x
6=-10x
-6/10=x
-3/5=x
The answer is D
Hope this helps
Answer:
add x to both sides. once you do this, you will get x+y=15
840cm^3
Step-by-step explanation:
[12*15-(12-8)*(15-5)]*6
=[180-40]*6
=140*6
=840cm^3
