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0.3x+0.2=-0.7
We move all terms to the left:
0.3x+0.2-(-0.7)=0
We add all the numbers together, and all the variables
0.3x+0.9=0
We move all terms containing x to the left, all other terms to the right
0.3x=-0.9
x=-0.9/0.3
x=-3+1.1102230246252E-16/0.3
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