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0.2x+2x+4=-3.7
We move all terms to the left:
0.2x+2x+4-(-3.7)=0
We add all the numbers together, and all the variables
2.2x+7.7=0
We move all terms containing x to the left, all other terms to the right
2.2x=-7.7
x=-7.7/2.2
x=-3+1/2
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