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0.4x-2.8=6
We move all terms to the left:
0.4x-2.8-(6)=0
We add all the numbers together, and all the variables
0.4x-8.8=0
We move all terms containing x to the left, all other terms to the right
0.4x=8.8
x=8.8/0.4
x=22
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