8y+40=4(y+9)

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Solution for 8y+40=4(y+9) equation: 


Simplifying
8y + 40 = 4(y + 9)

Reorder the terms:
40 + 8y = 4(y + 9)

Reorder the terms:
40 + 8y = 4(9 + y)
40 + 8y = (9 * 4 + y * 4)
40 + 8y = (36 + 4y)

Solving
40 + 8y = 36 + 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.
40 + 8y + -4y = 36 + 4y + -4y

Combine like terms: 8y + -4y = 4y
40 + 4y = 36 + 4y + -4y

Combine like terms: 4y + -4y = 0
40 + 4y = 36 + 0
40 + 4y = 36

Add '-40' to each side of the equation.
40 + -40 + 4y = 36 + -40

Combine like terms: 40 + -40 = 0
0 + 4y = 36 + -40
4y = 36 + -40

Combine like terms: 36 + -40 = -4
4y = -4

Divide each side by '4'.
y = -1

Simplifying
y = -1

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