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8.4x-23.1=-16.8
We move all terms to the left:
8.4x-23.1-(-16.8)=0
We add all the numbers together, and all the variables
8.4x-6.3=0
We move all terms containing x to the left, all other terms to the right
8.4x=6.3
x=6.3/8.4
x=2.7391304347826/3.6521739130435
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