2a-42=70

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Solution for 2a-42=70 equation: 



2a-42=70

We move all terms to the left:

2a-42-(70)=0

We add all the numbers together, and all the variables

2a-112=0

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

2a=112

a=112/2

a=56

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