4x-9+5x=18

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Solution for 4x-9+5x=18 equation: 


Simplifying
4x + -9 + 5x = 18

Reorder the terms:
-9 + 4x + 5x = 18

Combine like terms: 4x + 5x = 9x
-9 + 9x = 18

Solving
-9 + 9x = 18

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 9x = 18 + 9

Combine like terms: -9 + 9 = 0
0 + 9x = 18 + 9
9x = 18 + 9

Combine like terms: 18 + 9 = 27
9x = 27

Divide each side by '9'.
x = 3

Simplifying
x = 3

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