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-x+3=x+75
We move all terms to the left:
-x+3-(x+75)=0
We add all the numbers together, and all the variables
-1x-(x+75)+3=0
We get rid of parentheses
-1x-x-75+3=0
We add all the numbers together, and all the variables
-2x-72=0
We move all terms containing x to the left, all other terms to the right
-2x=72
x=72/-2
x=-36
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