20=-8y+4(y+3)

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Solution for 20=-8y+4(y+3) equation:


Simplifying
20 = -8y + 4(y + 3)

Reorder the terms:
20 = -8y + 4(3 + y)
20 = -8y + (3 * 4 + y * 4)
20 = -8y + (12 + 4y)

Reorder the terms:
20 = 12 + -8y + 4y

Combine like terms: -8y + 4y = -4y
20 = 12 + -4y

Solving
20 = 12 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
20 + 4y = 12 + -4y + 4y

Combine like terms: -4y + 4y = 0
20 + 4y = 12 + 0
20 + 4y = 12

Add '-20' to each side of the equation.
20 + -20 + 4y = 12 + -20

Combine like terms: 20 + -20 = 0
0 + 4y = 12 + -20
4y = 12 + -20

Combine like terms: 12 + -20 = -8
4y = -8

Divide each side by '4'.
y = -2

Simplifying
y = -2

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