4x+9+7=31

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Solution for 4x+9+7=31 equation:


Simplifying
4x + 9 + 7 = 31

Reorder the terms:
9 + 7 + 4x = 31

Combine like terms: 9 + 7 = 16
16 + 4x = 31

Solving
16 + 4x = 31

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 4x = 31 + -16

Combine like terms: 16 + -16 = 0
0 + 4x = 31 + -16
4x = 31 + -16

Combine like terms: 31 + -16 = 15
4x = 15

Divide each side by '4'.
x = 3.75

Simplifying
x = 3.75

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