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0.81x=-64.8
We move all terms to the left:
0.81x-(-64.8)=0
We add all the numbers together, and all the variables
0.81x+64.8=0
We move all terms containing x to the left, all other terms to the right
0.81x=-64.8
x=-64.8/0.81
x=-79+0.81/0.81
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