x-(0.3x)=2100

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Solution for x-(0.3x)=2100 equation: 



x-(0.3x)=2100

We move all terms to the left:

x-(0.3x)-(2100)=0

We add all the numbers together, and all the variables

x-(+0.3x)-2100=0

We get rid of parentheses

x-0.3x-2100=0

We add all the numbers together, and all the variables

0.7x-2100=0

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

0.7x=2100

x=2100/0.7

x=3000

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