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-7x+6=2x-39
We move all terms to the left:
-7x+6-(2x-39)=0
We get rid of parentheses
-7x-2x+39+6=0
We add all the numbers together, and all the variables
-9x+45=0
We move all terms containing x to the left, all other terms to the right
-9x=-45
x=-45/-9
x=+5
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