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6-2x=-4-20
We move all terms to the left:
6-2x-(-4-20)=0
We add all the numbers together, and all the variables
-2x+6-(-24)=0
We add all the numbers together, and all the variables
-2x+30=0
We move all terms containing x to the left, all other terms to the right
-2x=-30
x=-30/-2
x=+15
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