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8.1+10x=x
We move all terms to the left:
8.1+10x-(x)=0
We add all the numbers together, and all the variables
9x+8.1=0
We move all terms containing x to the left, all other terms to the right
9x=-8.1
x=-8.1/9
x=-7.3636363636364/8.1818181818182
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