30=5x-9+8x

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Solution for 30=5x-9+8x equation:


Simplifying
30 = 5x + -9 + 8x

Reorder the terms:
30 = -9 + 5x + 8x

Combine like terms: 5x + 8x = 13x
30 = -9 + 13x

Solving
30 = -9 + 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
30 + -13x = -9 + 13x + -13x

Combine like terms: 13x + -13x = 0
30 + -13x = -9 + 0
30 + -13x = -9

Add '-30' to each side of the equation.
30 + -30 + -13x = -9 + -30

Combine like terms: 30 + -30 = 0
0 + -13x = -9 + -30
-13x = -9 + -30

Combine like terms: -9 + -30 = -39
-13x = -39

Divide each side by '-13'.
x = 3

Simplifying
x = 3

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