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14.2x+3.8=-10.2
We move all terms to the left:
14.2x+3.8-(-10.2)=0
We add all the numbers together, and all the variables
14.2x+14=0
We move all terms containing x to the left, all other terms to the right
14.2x=-14
x=-14/14.2
x=-1/1.0142857142857
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