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7.9x-2.3x=159
We move all terms to the left:
7.9x-2.3x-(159)=0
We add all the numbers together, and all the variables
5.6x-159=0
We move all terms containing x to the left, all other terms to the right
5.6x=159
x=159/5.6
x=28+2.2/5.6
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