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15.6=20-2x
We move all terms to the left:
15.6-(20-2x)=0
We add all the numbers together, and all the variables
-(-2x+20)+15.6=0
We get rid of parentheses
2x-20+15.6=0
We add all the numbers together, and all the variables
2x-4.4=0
We move all terms containing x to the left, all other terms to the right
2x=4.4
x=4.4/2
x=2+0.4/2
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