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0.04x+0.5=0.7x-2.2
We move all terms to the left:
0.04x+0.5-(0.7x-2.2)=0
We get rid of parentheses
0.04x-0.7x+2.2+0.5=0
We add all the numbers together, and all the variables
-0.66x+2.7=0
We move all terms containing x to the left, all other terms to the right
-0.66x=-2.7
x=-2.7/-0.66
x=4+0.06/0.66
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