4x+31=9x-4

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Solution for 4x+31=9x-4 equation:


Simplifying
4x + 31 = 9x + -4

Reorder the terms:
31 + 4x = 9x + -4

Reorder the terms:
31 + 4x = -4 + 9x

Solving
31 + 4x = -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 + 4x + -9x = -4 + 9x + -9x

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

Combine like terms: 9x + -9x = 0
31 + -5x = -4 + 0
31 + -5x = -4

Add '-31' to each side of the equation.
31 + -31 + -5x = -4 + -31

Combine like terms: 31 + -31 = 0
0 + -5x = -4 + -31
-5x = -4 + -31

Combine like terms: -4 + -31 = -35
-5x = -35

Divide each side by '-5'.
x = 7

Simplifying
x = 7

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