(x+9)+3x=25

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Solution for (x+9)+3x=25 equation:


Simplifying
(x + 9) + 3x = 25

Reorder the terms:
(9 + x) + 3x = 25

Remove parenthesis around (9 + x)
9 + x + 3x = 25

Combine like terms: x + 3x = 4x
9 + 4x = 25

Solving
9 + 4x = 25

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 + 4x = 25 + -9

Combine like terms: 9 + -9 = 0
0 + 4x = 25 + -9
4x = 25 + -9

Combine like terms: 25 + -9 = 16
4x = 16

Divide each side by '4'.
x = 4

Simplifying
x = 4

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