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0.4x-1.9=1.5
We move all terms to the left:
0.4x-1.9-(1.5)=0
We add all the numbers together, and all the variables
0.4x-3.4=0
We move all terms containing x to the left, all other terms to the right
0.4x=3.4
x=3.4/0.4
x=8+0.2/0.4
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