(3x+4)+(x-9)=

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Solution for (3x+4)+(x-9)= equation:


Simplifying
(3x + 4) + (x + -9) = 0

Reorder the terms:
(4 + 3x) + (x + -9) = 0

Remove parenthesis around (4 + 3x)
4 + 3x + (x + -9) = 0

Reorder the terms:
4 + 3x + (-9 + x) = 0

Remove parenthesis around (-9 + x)
4 + 3x + -9 + x = 0

Reorder the terms:
4 + -9 + 3x + x = 0

Combine like terms: 4 + -9 = -5
-5 + 3x + x = 0

Combine like terms: 3x + x = 4x
-5 + 4x = 0

Solving
-5 + 4x = 0

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 4x = 0 + 5

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

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

Divide each side by '4'.
x = 1.25

Simplifying
x = 1.25

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