8(3a-5)-7(4a-3)=20-3a

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Solution for 8(3a-5)-7(4a-3)=20-3a equation: 



8(3a-5)-7(4a-3)=20-3a

We move all terms to the left:

8(3a-5)-7(4a-3)-(20-3a)=0

We add all the numbers together, and all the variables

8(3a-5)-7(4a-3)-(-3a+20)=0

We multiply parentheses

24a-28a-(-3a+20)-40+21=0

We get rid of parentheses

24a-28a+3a-20-40+21=0

We add all the numbers together, and all the variables

-1a-39=0

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

-a=39

a=39/-1

a=-39

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