(200+x)/400=1.05

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Solution for (200+x)/400=1.05 equation: 



(200+x)/400=1.05

We move all terms to the left:

(200+x)/400-(1.05)=0

We add all the numbers together, and all the variables

(x+200)/400-(1.05)=0

We add all the numbers together, and all the variables

(x+200)/400-1.05=0

We multiply all the terms by the denominator


(x+200)-(1.05)*400=0

We add all the numbers together, and all the variables

(x+200)-420=0

We get rid of parentheses

x+200-420=0

We add all the numbers together, and all the variables

x-220=0

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

x=220

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