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2.2x-1.3=-3.5
We move all terms to the left:
2.2x-1.3-(-3.5)=0
We add all the numbers together, and all the variables
2.2x+2.2=0
We move all terms containing x to the left, all other terms to the right
2.2x=-2.2
x=-2.2/2.2
x=-1
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