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2.2x-8.3=6.2x+12.1
We move all terms to the left:
2.2x-8.3-(6.2x+12.1)=0
We get rid of parentheses
2.2x-6.2x-12.1-8.3=0
We add all the numbers together, and all the variables
-4x-20.4=0
We move all terms containing x to the left, all other terms to the right
-4x=20.4
x=20.4/-4
x=-5+0.4/4
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