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0.1x+0.05=2.1
We move all terms to the left:
0.1x+0.05-(2.1)=0
We add all the numbers together, and all the variables
0.1x-2.05=0
We move all terms containing x to the left, all other terms to the right
0.1x=2.05
x=2.05/0.1
x=20+0.05/0.1
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