8(y+4)=100-4(20-y)

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Solution for 8(y+4)=100-4(20-y) equation:


Simplifying
8(y + 4) = 100 + -4(20 + -1y)

Reorder the terms:
8(4 + y) = 100 + -4(20 + -1y)
(4 * 8 + y * 8) = 100 + -4(20 + -1y)
(32 + 8y) = 100 + -4(20 + -1y)
32 + 8y = 100 + (20 * -4 + -1y * -4)
32 + 8y = 100 + (-80 + 4y)

Combine like terms: 100 + -80 = 20
32 + 8y = 20 + 4y

Solving
32 + 8y = 20 + 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.
32 + 8y + -4y = 20 + 4y + -4y

Combine like terms: 8y + -4y = 4y
32 + 4y = 20 + 4y + -4y

Combine like terms: 4y + -4y = 0
32 + 4y = 20 + 0
32 + 4y = 20

Add '-32' to each side of the equation.
32 + -32 + 4y = 20 + -32

Combine like terms: 32 + -32 = 0
0 + 4y = 20 + -32
4y = 20 + -32

Combine like terms: 20 + -32 = -12
4y = -12

Divide each side by '4'.
y = -3

Simplifying
y = -3

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