9x-45=4x+20

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Solution for 9x-45=4x+20 equation:


Simplifying
9x + -45 = 4x + 20

Reorder the terms:
-45 + 9x = 4x + 20

Reorder the terms:
-45 + 9x = 20 + 4x

Solving
-45 + 9x = 20 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-45 + 9x + -4x = 20 + 4x + -4x

Combine like terms: 9x + -4x = 5x
-45 + 5x = 20 + 4x + -4x

Combine like terms: 4x + -4x = 0
-45 + 5x = 20 + 0
-45 + 5x = 20

Add '45' to each side of the equation.
-45 + 45 + 5x = 20 + 45

Combine like terms: -45 + 45 = 0
0 + 5x = 20 + 45
5x = 20 + 45

Combine like terms: 20 + 45 = 65
5x = 65

Divide each side by '5'.
x = 13

Simplifying
x = 13

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