-7a-3(a-1)=53

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Solution for -7a-3(a-1)=53 equation: 



-7a-3(a-1)=53

We move all terms to the left:

-7a-3(a-1)-(53)=0

We multiply parentheses

-7a-3a+3-53=0

We add all the numbers together, and all the variables

-10a-50=0

We move all terms containing a to the left, all other terms to the right

-10a=50

a=50/-10

a=-5

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