4a-13=57

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Solution for 4a-13=57 equation: 



4a-13=57

We move all terms to the left:

4a-13-(57)=0

We add all the numbers together, and all the variables

4a-70=0

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

4a=70

a=70/4

a=17+1/2

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