(7a-4)=(3a+76)

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Solution for (7a-4)=(3a+76) equation: 



(7a-4)=(3a+76)

We move all terms to the left:

(7a-4)-((3a+76))=0

We get rid of parentheses

7a-((3a+76))-4=0



We calculate terms in parentheses: -((3a+76)), so:

(3a+76)

We get rid of parentheses

3a+76

Back to the equation:

-(3a+76)



We get rid of parentheses

7a-3a-76-4=0

We add all the numbers together, and all the variables

4a-80=0

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

4a=80

a=80/4

a=20

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