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7x+15.89=19.82
We move all terms to the left:
7x+15.89-(19.82)=0
We add all the numbers together, and all the variables
7x-3.93=0
We move all terms containing x to the left, all other terms to the right
7x=3.93
x=3.93/7
x=2.03626943005/3.62694300518
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