5x+3x-9=15

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Solution for 5x+3x-9=15 equation: 


Simplifying
5x + 3x + -9 = 15

Reorder the terms:
-9 + 5x + 3x = 15

Combine like terms: 5x + 3x = 8x
-9 + 8x = 15

Solving
-9 + 8x = 15

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 + 8x = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 8x = 15 + 9
8x = 15 + 9

Combine like terms: 15 + 9 = 24
8x = 24

Divide each side by '8'.
x = 3

Simplifying
x = 3

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