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145=10x+20
We move all terms to the left:
145-(10x+20)=0
We get rid of parentheses
-10x-20+145=0
We add all the numbers together, and all the variables
-10x+125=0
We move all terms containing x to the left, all other terms to the right
-10x=-125
x=-125/-10
x=12+1/2
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