Solve for a
a=-12
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a-48-5a=0
Subtract 5a from both sides.
-4a-48=0
Combine a and -5a to get -4a.
-4a=48
Add 48 to both sides. Anything plus zero gives itself.
a=\frac{48}{-4}
Divide both sides by -4.
a=-12
Divide 48 by -4 to get -12.
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