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0.83333333333x-0.33333333333x-7=3
We move all terms to the left:
0.83333333333x-0.33333333333x-7-(3)=0
We add all the numbers together, and all the variables
0.5x-10=0
We move all terms containing x to the left, all other terms to the right
0.5x=10
x=10/0.5
x=20
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