3(4+7a)-5(1-2a)=57

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Solution for 3(4+7a)-5(1-2a)=57 equation: 



3(4+7a)-5(1-2a)=57

We move all terms to the left:

3(4+7a)-5(1-2a)-(57)=0

We add all the numbers together, and all the variables

3(7a+4)-5(-2a+1)-57=0

We multiply parentheses

21a+10a+12-5-57=0

We add all the numbers together, and all the variables

31a-50=0

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

31a=50

a=50/31

a=1+19/31

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