5(a-5)=3(a-7)

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Solution for 5(a-5)=3(a-7) equation: 



5(a-5)=3(a-7)

We move all terms to the left:

5(a-5)-(3(a-7))=0

We multiply parentheses

5a-(3(a-7))-25=0



We calculate terms in parentheses: -(3(a-7)), so:

3(a-7)

We multiply parentheses

3a-21

Back to the equation:

-(3a-21)



We get rid of parentheses

5a-3a+21-25=0

We add all the numbers together, and all the variables

2a-4=0

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

2a=4

a=4/2

a=2

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