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130=(20x)+(23x)+1
We move all terms to the left:
130-((20x)+(23x)+1)=0
We add all the numbers together, and all the variables
-(43x+1)+130=0
We get rid of parentheses
-43x-1+130=0
We add all the numbers together, and all the variables
-43x+129=0
We move all terms containing x to the left, all other terms to the right
-43x=-129
x=-129/-43
x=+3
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