31=4x+5x+4

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Solution for 31=4x+5x+4 equation:


Simplifying
31 = 4x + 5x + 4

Reorder the terms:
31 = 4 + 4x + 5x

Combine like terms: 4x + 5x = 9x
31 = 4 + 9x

Solving
31 = 4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
31 + -9x = 4 + 9x + -9x

Combine like terms: 9x + -9x = 0
31 + -9x = 4 + 0
31 + -9x = 4

Add '-31' to each side of the equation.
31 + -31 + -9x = 4 + -31

Combine like terms: 31 + -31 = 0
0 + -9x = 4 + -31
-9x = 4 + -31

Combine like terms: 4 + -31 = -27
-9x = -27

Divide each side by '-9'.
x = 3

Simplifying
x = 3

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