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6x+30+4x+10(x=3)
We move all terms to the left:
6x+30+4x+10(x-(3))=0
We add all the numbers together, and all the variables
10x+10(x-3)+30=0
We multiply parentheses
10x+10x-30+30=0
We add all the numbers together, and all the variables
20x=0
x=0/20
x=0
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