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3(x-5)+2(x+2)=54
We move all terms to the left:
3(x-5)+2(x+2)-(54)=0
We multiply parentheses
3x+2x-15+4-54=0
We add all the numbers together, and all the variables
5x-65=0
We move all terms containing x to the left, all other terms to the right
5x=65
x=65/5
x=13
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