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3.57x+7.56x+9.12=50.85
We move all terms to the left:
3.57x+7.56x+9.12-(50.85)=0
We add all the numbers together, and all the variables
11.13x-41.73=0
We move all terms containing x to the left, all other terms to the right
11.13x=41.73
x=41.73/11.13
x=3+6.2238805970149/8.3059701492538
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