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1.42x-7=0.81
We move all terms to the left:
1.42x-7-(0.81)=0
We add all the numbers together, and all the variables
1.42x-7.81=0
We move all terms containing x to the left, all other terms to the right
1.42x=7.81
x=7.81/1.42
x=5+0.71/1.42
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