3x-4y+7x+9y-12=4x-5y-12

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Solution for 3x-4y+7x+9y-12=4x-5y-12 equation:


Simplifying
3x + -4y + 7x + 9y + -12 = 4x + -5y + -12

Reorder the terms:
-12 + 3x + 7x + -4y + 9y = 4x + -5y + -12

Combine like terms: 3x + 7x = 10x
-12 + 10x + -4y + 9y = 4x + -5y + -12

Combine like terms: -4y + 9y = 5y
-12 + 10x + 5y = 4x + -5y + -12

Reorder the terms:
-12 + 10x + 5y = -12 + 4x + -5y

Add '12' to each side of the equation.
-12 + 10x + 12 + 5y = -12 + 4x + 12 + -5y

Reorder the terms:
-12 + 12 + 10x + 5y = -12 + 4x + 12 + -5y

Combine like terms: -12 + 12 = 0
0 + 10x + 5y = -12 + 4x + 12 + -5y
10x + 5y = -12 + 4x + 12 + -5y

Reorder the terms:
10x + 5y = -12 + 12 + 4x + -5y

Combine like terms: -12 + 12 = 0
10x + 5y = 0 + 4x + -5y
10x + 5y = 4x + -5y

Solving
10x + 5y = 4x + -5y

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
10x + -4x + 5y = 4x + -4x + -5y

Combine like terms: 10x + -4x = 6x
6x + 5y = 4x + -4x + -5y

Combine like terms: 4x + -4x = 0
6x + 5y = 0 + -5y
6x + 5y = -5y

Add '-5y' to each side of the equation.
6x + 5y + -5y = -5y + -5y

Combine like terms: 5y + -5y = 0
6x + 0 = -5y + -5y
6x = -5y + -5y

Combine like terms: -5y + -5y = -10y
6x = -10y

Divide each side by '6'.
x = -1.666666667y

Simplifying
x = -1.666666667y

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