A+3=b-7

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Solution for A+3=b-7 equation: 



+3=A-7

We move all terms to the left:

+3-(A-7)=0

We get rid of parentheses

-A+7+3=0

We add all the numbers together, and all the variables

-1A+10=0

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

-A=-10

A=-10/-1

A=+10

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