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2.2=4.2-0.5x
We move all terms to the left:
2.2-(4.2-0.5x)=0
We add all the numbers together, and all the variables
-(-0.5x+4.2)+2.2=0
We get rid of parentheses
0.5x-4.2+2.2=0
We add all the numbers together, and all the variables
0.5x-2=0
We move all terms containing x to the left, all other terms to the right
0.5x=2
x=2/0.5
x=4
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