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54=4-2x
We move all terms to the left:
54-(4-2x)=0
We add all the numbers together, and all the variables
-(-2x+4)+54=0
We get rid of parentheses
2x-4+54=0
We add all the numbers together, and all the variables
2x+50=0
We move all terms containing x to the left, all other terms to the right
2x=-50
x=-50/2
x=-25
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