Solve for a
a=4
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70+5a=50+10a
Use the distributive property to multiply 10 by 5+a.
70+5a-10a=50
Subtract 10a from both sides.
70-5a=50
Combine 5a and -10a to get -5a.
-5a=50-70
Subtract 70 from both sides.
-5a=-20
Subtract 70 from 50 to get -20.
a=\frac{-20}{-5}
Divide both sides by -5.
a=4
Divide -20 by -5 to get 4.
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