-42=-13+4/3a

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Solution for -42=-13+4/3a equation: 



-42=-13+4/3a

We move all terms to the left:

-42-(-13+4/3a)=0



Domain of the equation: 3a)!=0

a!=0/1

a!=0

a∈R



We add all the numbers together, and all the variables

-(4/3a-13)-42=0

We get rid of parentheses

-4/3a+13-42=0

We multiply all the terms by the denominator


13*3a-42*3a-4=0

Wy multiply elements

39a-126a-4=0

We add all the numbers together, and all the variables

-87a-4=0

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

-87a=4

a=4/-87

a=-4/87

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