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8+1x=20+-3x
We move all terms to the left:
8+1x-(20+-3x)=0
We add all the numbers together, and all the variables
1x-(-3x)+8=0
We add all the numbers together, and all the variables
x-(-3x)+8=0
We get rid of parentheses
x+3x+8=0
We add all the numbers together, and all the variables
4x+8=0
We move all terms containing x to the left, all other terms to the right
4x=-8
x=-8/4
x=-2
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