(6x+9y)+15=3(3x+y)

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Solution for (6x+9y)+15=3(3x+y) equation:


Simplifying
(6x + 9y) + 15 = 3(3x + y)

Remove parenthesis around (6x + 9y)
6x + 9y + 15 = 3(3x + y)

Reorder the terms:
15 + 6x + 9y = 3(3x + y)
15 + 6x + 9y = (3x * 3 + y * 3)
15 + 6x + 9y = (9x + 3y)

Solving
15 + 6x + 9y = 9x + 3y

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.
15 + 6x + -9x + 9y = 9x + -9x + 3y

Combine like terms: 6x + -9x = -3x
15 + -3x + 9y = 9x + -9x + 3y

Combine like terms: 9x + -9x = 0
15 + -3x + 9y = 0 + 3y
15 + -3x + 9y = 3y

Add '-15' to each side of the equation.
15 + -3x + -15 + 9y = -15 + 3y

Reorder the terms:
15 + -15 + -3x + 9y = -15 + 3y

Combine like terms: 15 + -15 = 0
0 + -3x + 9y = -15 + 3y
-3x + 9y = -15 + 3y

Add '-9y' to each side of the equation.
-3x + 9y + -9y = -15 + 3y + -9y

Combine like terms: 9y + -9y = 0
-3x + 0 = -15 + 3y + -9y
-3x = -15 + 3y + -9y

Combine like terms: 3y + -9y = -6y
-3x = -15 + -6y

Divide each side by '-3'.
x = 5 + 2y

Simplifying
x = 5 + 2y

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