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-x+28=3x+18
We move all terms to the left:
-x+28-(3x+18)=0
We add all the numbers together, and all the variables
-1x-(3x+18)+28=0
We get rid of parentheses
-1x-3x-18+28=0
We add all the numbers together, and all the variables
-4x+10=0
We move all terms containing x to the left, all other terms to the right
-4x=-10
x=-10/-4
x=2+1/2
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