5x+4x-8=19

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Solution for 5x+4x-8=19 equation: 


Simplifying
5x + 4x + -8 = 19

Reorder the terms:
-8 + 5x + 4x = 19

Combine like terms: 5x + 4x = 9x
-8 + 9x = 19

Solving
-8 + 9x = 19

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 9x = 19 + 8

Combine like terms: -8 + 8 = 0
0 + 9x = 19 + 8
9x = 19 + 8

Combine like terms: 19 + 8 = 27
9x = 27

Divide each side by '9'.
x = 3

Simplifying
x = 3

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