Solve for x
x=-69
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9-9x-63+8x=8+7
Use the distributive property to multiply -9 by x+7.
-54-9x+8x=8+7
Subtract 63 from 9 to get -54.
-54-x=8+7
Combine -9x and 8x to get -x.
-54-x=15
Add 8 and 7 to get 15.
-x=15+54
Add 54 to both sides.
-x=69
Add 15 and 54 to get 69.
x=-69
Multiply both sides by -1.
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