4*5=9*x

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Solution for 4*5=9*x equation:


Simplifying
4 * 5 = 9x

Multiply 4 * 5
20 = 9x

Solving
20 = 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
20 + -9x = 9x + -9x

Combine like terms: 9x + -9x = 0
20 + -9x = 0

Add '-20' to each side of the equation.
20 + -20 + -9x = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -9x = 0 + -20
-9x = 0 + -20

Combine like terms: 0 + -20 = -20
-9x = -20

Divide each side by '-9'.
x = 2.222222222

Simplifying
x = 2.222222222

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