Solve for a
a=10
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214-7a-171=-27
Multiply both sides of the equation by 9.
43-7a=-27
Subtract 171 from 214 to get 43.
-7a=-27-43
Subtract 43 from both sides.
-7a=-70
Subtract 43 from -27 to get -70.
a=\frac{-70}{-7}
Divide both sides by -7.
a=10
Divide -70 by -7 to get 10.
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