(12*.15x)+(12*.25y)=.21y*12

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Solution for (12*.15x)+(12*.25y)=.21y*12 equation:


Simplifying
(12 * 0.15x) + (12 * 0.25y) = 0.21y * 12

Multiply 12 * 0.15
(1.8x) + (12 * 0.25y) = 0.21y * 12

Multiply 12 * 0.25
(1.8x) + (3y) = 0.21y * 12

Reorder the terms for easier multiplication:
(1.8x) + (3y) = 0.21 * 12y

Multiply 0.21 * 12
(1.8x) + (3y) = 2.52y

Solving
(1.8x) + (3y) = 2.52y

Solving for variable 'x'.

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

Add '(-3y)' to each side of the equation.
(1.8x) + (3y) + (-3y) = 2.52y + (-3y)

Combine like terms: (3y) + (-3y) = 0
(1.8x) + 0 = 2.52y + (-3y)
(1.8x) = 2.52y + (-3y)

Combine like terms: 2.52y + (-3y) = -0.48y
(1.8x) = -0.48y

Divide each side by '1.8'.
x = -0.2666666667y

Simplifying
x = -0.2666666667y

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