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68=6.6x+18.6
We move all terms to the left:
68-(6.6x+18.6)=0
We get rid of parentheses
-6.6x-18.6+68=0
We add all the numbers together, and all the variables
-6.6x+49.4=0
We move all terms containing x to the left, all other terms to the right
-6.6x=-49.4
x=-49.4/-6.6
x=7+1/2.0625
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