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8.3=9.9-0.2x
We move all terms to the left:
8.3-(9.9-0.2x)=0
We add all the numbers together, and all the variables
-(-0.2x+9.9)+8.3=0
We get rid of parentheses
0.2x-9.9+8.3=0
We add all the numbers together, and all the variables
0.2x-1.6=0
We move all terms containing x to the left, all other terms to the right
0.2x=1.6
x=1.6/0.2
x=8
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