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0.1x+0.9=5
We move all terms to the left:
0.1x+0.9-(5)=0
We add all the numbers together, and all the variables
0.1x-4.1=0
We move all terms containing x to the left, all other terms to the right
0.1x=4.1
x=4.1/0.1
x=40+0.1/0.1
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