12=2(y+4)-4y

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Solution for 12=2(y+4)-4y equation:


Simplifying
12 = 2(y + 4) + -4y

Reorder the terms:
12 = 2(4 + y) + -4y
12 = (4 * 2 + y * 2) + -4y
12 = (8 + 2y) + -4y

Combine like terms: 2y + -4y = -2y
12 = 8 + -2y

Solving
12 = 8 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
12 + 2y = 8 + -2y + 2y

Combine like terms: -2y + 2y = 0
12 + 2y = 8 + 0
12 + 2y = 8

Add '-12' to each side of the equation.
12 + -12 + 2y = 8 + -12

Combine like terms: 12 + -12 = 0
0 + 2y = 8 + -12
2y = 8 + -12

Combine like terms: 8 + -12 = -4
2y = -4

Divide each side by '2'.
y = -2

Simplifying
y = -2

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