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20+x=-4x-16-2x
We move all terms to the left:
20+x-(-4x-16-2x)=0
We add all the numbers together, and all the variables
x-(-6x-16)+20=0
We get rid of parentheses
x+6x+16+20=0
We add all the numbers together, and all the variables
7x+36=0
We move all terms containing x to the left, all other terms to the right
7x=-36
x=-36/7
x=-5+1/7
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