x-x*30/100=42

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Solution for x-x*30/100=42 equation: 



x-x*30/100=42

We move all terms to the left:

x-x*30/100-(42)=0

We multiply all the terms by the denominator


x*100-x*30-42*100=0

We add all the numbers together, and all the variables

x*100-x*30-4200=0

Wy multiply elements

100x-30x-4200=0

We add all the numbers together, and all the variables

70x-4200=0

We move all terms containing x to the left, all other terms to the right

70x=4200

x=4200/70

x=60

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