2.1X=20+X

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Solution for 2.1X=20+X equation: 


Simplifying
2.1X = 20 + X

Solving
2.1X = 20 + X

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-1X' to each side of the equation.
2.1X + -1X = 20 + X + -1X

Combine like terms: 2.1X + -1X = 1.1X
1.1X = 20 + X + -1X

Combine like terms: X + -1X = 0
1.1X = 20 + 0
1.1X = 20

Divide each side by '1.1'.
X = 18.18181818

Simplifying
X = 18.18181818

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