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4.2x=-3.36
We move all terms to the left:
4.2x-(-3.36)=0
We add all the numbers together, and all the variables
4.2x+3.36=0
We move all terms containing x to the left, all other terms to the right
4.2x=-3.36
x=-3.36/4.2
x=-2.4705882352941/3.0882352941176
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