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140=2x-5
We move all terms to the left:
140-(2x-5)=0
We get rid of parentheses
-2x+5+140=0
We add all the numbers together, and all the variables
-2x+145=0
We move all terms containing x to the left, all other terms to the right
-2x=-145
x=-145/-2
x=72+1/2
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