(3x+7)+(9x+5)=

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Solution for (3x+7)+(9x+5)= equation:


Simplifying
(3x + 7) + (9x + 5) = 0

Reorder the terms:
(7 + 3x) + (9x + 5) = 0

Remove parenthesis around (7 + 3x)
7 + 3x + (9x + 5) = 0

Reorder the terms:
7 + 3x + (5 + 9x) = 0

Remove parenthesis around (5 + 9x)
7 + 3x + 5 + 9x = 0

Reorder the terms:
7 + 5 + 3x + 9x = 0

Combine like terms: 7 + 5 = 12
12 + 3x + 9x = 0

Combine like terms: 3x + 9x = 12x
12 + 12x = 0

Solving
12 + 12x = 0

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 12x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 12x = 0 + -12
12x = 0 + -12

Combine like terms: 0 + -12 = -12
12x = -12

Divide each side by '12'.
x = -1

Simplifying
x = -1

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