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3(2-5x)-10(4x-8)=4
We move all terms to the left:
3(2-5x)-10(4x-8)-(4)=0
We add all the numbers together, and all the variables
3(-5x+2)-10(4x-8)-4=0
We multiply parentheses
-15x-40x+6+80-4=0
We add all the numbers together, and all the variables
-55x+82=0
We move all terms containing x to the left, all other terms to the right
-55x=-82
x=-82/-55
x=1+27/55
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