-4a+8=42

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Solution for -4a+8=42 equation: 



-4a+8=42

We move all terms to the left:

-4a+8-(42)=0

We add all the numbers together, and all the variables

-4a-34=0

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

-4a=34

a=34/-4

a=-8+1/2

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