20=2y+4-4y

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Solution for 20=2y+4-4y equation:


Simplifying
20 = 2y + 4 + -4y

Reorder the terms:
20 = 4 + 2y + -4y

Combine like terms: 2y + -4y = -2y
20 = 4 + -2y

Solving
20 = 4 + -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.
20 + 2y = 4 + -2y + 2y

Combine like terms: -2y + 2y = 0
20 + 2y = 4 + 0
20 + 2y = 4

Add '-20' to each side of the equation.
20 + -20 + 2y = 4 + -20

Combine like terms: 20 + -20 = 0
0 + 2y = 4 + -20
2y = 4 + -20

Combine like terms: 4 + -20 = -16
2y = -16

Divide each side by '2'.
y = -8

Simplifying
y = -8

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