5=7(a-1)-4a

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Solution for 5=7(a-1)-4a equation: 



5=7(a-1)-4a

We move all terms to the left:

5-(7(a-1)-4a)=0



We calculate terms in parentheses: -(7(a-1)-4a), so:

7(a-1)-4a

We add all the numbers together, and all the variables

-4a+7(a-1)

We multiply parentheses

-4a+7a-7

We add all the numbers together, and all the variables

3a-7

Back to the equation:

-(3a-7)



We get rid of parentheses

-3a+7+5=0

We add all the numbers together, and all the variables

-3a+12=0

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

-3a=-12

a=-12/-3

a=+4

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