7(1-2a)=-91

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Solution for 7(1-2a)=-91 equation: 



7(1-2a)=-91

We move all terms to the left:

7(1-2a)-(-91)=0

We add all the numbers together, and all the variables

7(-2a+1)-(-91)=0

We add all the numbers together, and all the variables

7(-2a+1)+91=0

We multiply parentheses

-14a+7+91=0

We add all the numbers together, and all the variables

-14a+98=0

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

-14a=-98

a=-98/-14

a=+7

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