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-3+10x+10=-3-10x
We move all terms to the left:
-3+10x+10-(-3-10x)=0
We add all the numbers together, and all the variables
10x-(-10x-3)-3+10=0
We add all the numbers together, and all the variables
10x-(-10x-3)+7=0
We get rid of parentheses
10x+10x+3+7=0
We add all the numbers together, and all the variables
20x+10=0
We move all terms containing x to the left, all other terms to the right
20x=-10
x=-10/20
x=-1/2
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