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0.42x=-0.5
We move all terms to the left:
0.42x-(-0.5)=0
We add all the numbers together, and all the variables
0.42x+0.5=0
We move all terms containing x to the left, all other terms to the right
0.42x=-0.5
x=-0.5/0.42
x=-1+0.08/0.42
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