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5x-x=80x-3
We move all terms to the left:
5x-x-(80x-3)=0
We add all the numbers together, and all the variables
4x-(80x-3)=0
We get rid of parentheses
4x-80x+3=0
We add all the numbers together, and all the variables
-76x+3=0
We move all terms containing x to the left, all other terms to the right
-76x=-3
x=-3/-76
x=3/76
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