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-90=-11x-4
We move all terms to the left:
-90-(-11x-4)=0
We get rid of parentheses
11x+4-90=0
We add all the numbers together, and all the variables
11x-86=0
We move all terms containing x to the left, all other terms to the right
11x=86
x=86/11
x=7+9/11
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