5a-7=83

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Solution for 5a-7=83 equation: 



5a-7=83

We move all terms to the left:

5a-7-(83)=0

We add all the numbers together, and all the variables

5a-90=0

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

5a=90

a=90/5

a=18

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