0.30x+0.10(100-X)=30

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Solution for 0.30x+0.10(100-X)=30 equation: 



0.30x+0.10(100-x)=30

We move all terms to the left:

0.30x+0.10(100-x)-(30)=0

We add all the numbers together, and all the variables

0.30x+0.10(-1x+100)-30=0

We multiply parentheses

0.30x-0.1x+10-30=0

We add all the numbers together, and all the variables

0.2x-20=0

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

0.2x=20

x=20/0.2

x=100

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