18.9=21x

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Solution for 18.9=21x equation:


Simplifying
18.9 = 21x

Solving
18.9 = 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
18.9 + -21x = 21x + -21x

Combine like terms: 21x + -21x = 0
18.9 + -21x = 0

Add '-18.9' to each side of the equation.
18.9 + -18.9 + -21x = 0 + -18.9

Combine like terms: 18.9 + -18.9 = 0.0
0.0 + -21x = 0 + -18.9
-21x = 0 + -18.9

Combine like terms: 0 + -18.9 = -18.9
-21x = -18.9

Divide each side by '-21'.
x = 0.9

Simplifying
x = 0.9

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