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0.5x-0.2=-1
We move all terms to the left:
0.5x-0.2-(-1)=0
We add all the numbers together, and all the variables
0.5x+0.8=0
We move all terms containing x to the left, all other terms to the right
0.5x=-0.8
x=-0.8/0.5
x=-1+0.3/0.5
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