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x-0.18x=550
We move all terms to the left:
x-0.18x-(550)=0
We add all the numbers together, and all the variables
0.82x-550=0
We move all terms containing x to the left, all other terms to the right
0.82x=550
x=550/0.82
x=670+0.60000000000002/0.82
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