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0.7w-0.6+0.5w=-2
We move all terms to the left:
0.7w-0.6+0.5w-(-2)=0
We add all the numbers together, and all the variables
1.2w+1.4=0
We move all terms containing w to the left, all other terms to the right
1.2w=-1.4
w=-1.4/1.2
w=-1+0.2/1.2
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