-9a+2(1-4a)=-8(a-7)

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Solution for -9a+2(1-4a)=-8(a-7) equation: 



-9a+2(1-4a)=-8(a-7)

We move all terms to the left:

-9a+2(1-4a)-(-8(a-7))=0

We add all the numbers together, and all the variables

-9a+2(-4a+1)-(-8(a-7))=0

We multiply parentheses

-9a-8a-(-8(a-7))+2=0



We calculate terms in parentheses: -(-8(a-7)), so:

-8(a-7)

We multiply parentheses

-8a+56

Back to the equation:

-(-8a+56)



We add all the numbers together, and all the variables

-17a-(-8a+56)+2=0

We get rid of parentheses

-17a+8a-56+2=0

We add all the numbers together, and all the variables

-9a-54=0

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

-9a=54

a=54/-9

a=-6

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