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x-40/100=19.9
We move all terms to the left:
x-40/100-(19.9)=0
We add all the numbers together, and all the variables
x-19.9-40/100=0
We multiply all the terms by the denominator
x*100-40-(19.9)*100=0
We add all the numbers together, and all the variables
x*100-2030=0
Wy multiply elements
100x-2030=0
We move all terms containing x to the left, all other terms to the right
100x=2030
x=2030/100
x=20+3/10
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