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-6.3x=-4.2
We move all terms to the left:
-6.3x-(-4.2)=0
We add all the numbers together, and all the variables
-6.3x+4.2=0
We move all terms containing x to the left, all other terms to the right
-6.3x=-4.2
x=-4.2/-6.3
x=1.9090909090909/2.8636363636364
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