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30+7(x+3)=-3+7x+54
We move all terms to the left:
30+7(x+3)-(-3+7x+54)=0
We add all the numbers together, and all the variables
7(x+3)-(7x+51)+30=0
We multiply parentheses
7x-(7x+51)+21+30=0
We get rid of parentheses
7x-7x-51+21+30=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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