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-0.63x+0.42x=5.8
We move all terms to the left:
-0.63x+0.42x-(5.8)=0
We add all the numbers together, and all the variables
-0.21x-5.8=0
We move all terms containing x to the left, all other terms to the right
-0.21x=5.8
x=5.8/-0.21
x=-27+0.13/0.21
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