3x+5x-9=13

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Solution for 3x+5x-9=13 equation: 


Simplifying
3x + 5x + -9 = 13

Reorder the terms:
-9 + 3x + 5x = 13

Combine like terms: 3x + 5x = 8x
-9 + 8x = 13

Solving
-9 + 8x = 13

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 = 13 + 9

Combine like terms: -9 + 9 = 0
0 + 8x = 13 + 9
8x = 13 + 9

Combine like terms: 13 + 9 = 22
8x = 22

Divide each side by '8'.
x = 2.75

Simplifying
x = 2.75

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