X=2y+21/5

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Solution for X=2y+21/5 equation: 



X=2X+21/5

We move all terms to the left:

X-(2X+21/5)=0

We add all the numbers together, and all the variables

X-(+2X+21/5)=0

We get rid of parentheses

X-2X-21/5=0

We multiply all the terms by the denominator


X*5-2X*5-21=0

Wy multiply elements

5X-10X-21=0

We add all the numbers together, and all the variables

-5X-21=0

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

-5X=21

X=21/-5

X=-4+1/5

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