21x=45+18x

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Solution for 21x=45+18x equation: 


Simplifying
21x = 45 + 18x

Solving
21x = 45 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
21x + -18x = 45 + 18x + -18x

Combine like terms: 21x + -18x = 3x
3x = 45 + 18x + -18x

Combine like terms: 18x + -18x = 0
3x = 45 + 0
3x = 45

Divide each side by '3'.
x = 15

Simplifying
x = 15

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