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7(x+3)-4(5x-2)=11
We move all terms to the left:
7(x+3)-4(5x-2)-(11)=0
We multiply parentheses
7x-20x+21+8-11=0
We add all the numbers together, and all the variables
-13x+18=0
We move all terms containing x to the left, all other terms to the right
-13x=-18
x=-18/-13
x=1+5/13
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