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0.8x+3.2x=5.6
We move all terms to the left:
0.8x+3.2x-(5.6)=0
We add all the numbers together, and all the variables
4x-5.6=0
We move all terms containing x to the left, all other terms to the right
4x=5.6
x=5.6/4
x=1+1/2.5
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