2(12-3y)+9y=42

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Solution for 2(12-3y)+9y=42 equation:


Simplifying
2(12 + -3y) + 9y = 42
(12 * 2 + -3y * 2) + 9y = 42
(24 + -6y) + 9y = 42

Combine like terms: -6y + 9y = 3y
24 + 3y = 42

Solving
24 + 3y = 42

Solving for variable 'y'.

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

Add '-24' to each side of the equation.
24 + -24 + 3y = 42 + -24

Combine like terms: 24 + -24 = 0
0 + 3y = 42 + -24
3y = 42 + -24

Combine like terms: 42 + -24 = 18
3y = 18

Divide each side by '3'.
y = 6

Simplifying
y = 6

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