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5.8x-20=(-8.4)
We move all terms to the left:
5.8x-20-((-8.4))=0
We add all the numbers together, and all the variables
5.8x-11.6=0
We move all terms containing x to the left, all other terms to the right
5.8x=11.6
x=11.6/5.8
x=2
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