10a-42=28

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Solution for 10a-42=28 equation: 



10a-42=28

We move all terms to the left:

10a-42-(28)=0

We add all the numbers together, and all the variables

10a-70=0

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

10a=70

a=70/10

a=7

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