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0.2x-1.6=-4.2
We move all terms to the left:
0.2x-1.6-(-4.2)=0
We add all the numbers together, and all the variables
0.2x+2.6=0
We move all terms containing x to the left, all other terms to the right
0.2x=-2.6
x=-2.6/0.2
x=-13
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