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3x+7x+1=2(5-+1)
We move all terms to the left:
3x+7x+1-(2(5-+1))=0
We add all the numbers together, and all the variables
3x+7x+1-(20)=0
We add all the numbers together, and all the variables
10x-19=0
We move all terms containing x to the left, all other terms to the right
10x=19
x=19/10
x=1+9/10
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