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-6.4-2x=-2.2
We move all terms to the left:
-6.4-2x-(-2.2)=0
We add all the numbers together, and all the variables
-2x-4.2=0
We move all terms containing x to the left, all other terms to the right
-2x=4.2
x=4.2/-2
x=-2+0.2/2
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