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2.8+3.12x+1=16.6
We move all terms to the left:
2.8+3.12x+1-(16.6)=0
We add all the numbers together, and all the variables
3.12x-12.8=0
We move all terms containing x to the left, all other terms to the right
3.12x=12.8
x=12.8/3.12
x=4+0.32/3.12
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