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3=7x-135
We move all terms to the left:
3-(7x-135)=0
We get rid of parentheses
-7x+135+3=0
We add all the numbers together, and all the variables
-7x+138=0
We move all terms containing x to the left, all other terms to the right
-7x=-138
x=-138/-7
x=19+5/7
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