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15x-(4x-5)=16
We move all terms to the left:
15x-(4x-5)-(16)=0
We get rid of parentheses
15x-4x+5-16=0
We add all the numbers together, and all the variables
11x-11=0
We move all terms containing x to the left, all other terms to the right
11x=11
x=11/11
x=1
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