x+0.07x+0.07(x+0.07x)=21

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Solution for x+0.07x+0.07(x+0.07x)=21 equation: 



x+0.07x+0.07(x+0.07x)=21

We move all terms to the left:

x+0.07x+0.07(x+0.07x)-(21)=0

We add all the numbers together, and all the variables

x+0.07x+0.07(+1.07x)-21=0

We add all the numbers together, and all the variables

1.07x+0.07(+1.07x)-21=0

We multiply parentheses

1.07x+0.07x-21=0

We add all the numbers together, and all the variables

1.14x-21=0

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

1.14x=21

x=21/1.14

x=18+0.48/1.14

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