U – 9 = -7 u + 7 slove for u

u – 9 = -7 u + 7

-u          -u

-9 = -8u + 7

-7            - 7

-16 = -8u

This happened because first I isolated the variable so there is only on one side.

Then I solved the actual numbers.

Since there are two negatives they cancel out.

Finally divide both sides by 8.

This is equal to the answer are u = 2.

Hope this helps

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /