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20+2x=4-6x
We move all terms to the left:
20+2x-(4-6x)=0
We add all the numbers together, and all the variables
2x-(-6x+4)+20=0
We get rid of parentheses
2x+6x-4+20=0
We add all the numbers together, and all the variables
8x+16=0
We move all terms containing x to the left, all other terms to the right
8x=-16
x=-16/8
x=-2
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