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10(3+x)=-7
We move all terms to the left:
10(3+x)-(-7)=0
We add all the numbers together, and all the variables
10(x+3)-(-7)=0
We add all the numbers together, and all the variables
10(x+3)+7=0
We multiply parentheses
10x+30+7=0
We add all the numbers together, and all the variables
10x+37=0
We move all terms containing x to the left, all other terms to the right
10x=-37
x=-37/10
x=-3+7/10
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