Solve for a
a=-2
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-28+7a=-56-7a
Use the distributive property to multiply -7 by 8+a.
-28+7a+7a=-56
Add 7a to both sides.
-28+14a=-56
Combine 7a and 7a to get 14a.
14a=-56+28
Add 28 to both sides.
14a=-28
Add -56 and 28 to get -28.
a=\frac{-28}{14}
Divide both sides by 14.
a=-2
Divide -28 by 14 to get -2.
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