8y+5(y+4)=(7y-1)3

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Solution for 8y+5(y+4)=(7y-1)3 equation:


Simplifying
8y + 5(y + 4) = (7y + -1) * 3

Reorder the terms:
8y + 5(4 + y) = (7y + -1) * 3
8y + (4 * 5 + y * 5) = (7y + -1) * 3
8y + (20 + 5y) = (7y + -1) * 3

Reorder the terms:
20 + 8y + 5y = (7y + -1) * 3

Combine like terms: 8y + 5y = 13y
20 + 13y = (7y + -1) * 3

Reorder the terms:
20 + 13y = (-1 + 7y) * 3

Reorder the terms for easier multiplication:
20 + 13y = 3(-1 + 7y)
20 + 13y = (-1 * 3 + 7y * 3)
20 + 13y = (-3 + 21y)

Solving
20 + 13y = -3 + 21y

Solving for variable 'y'.

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

Add '-21y' to each side of the equation.
20 + 13y + -21y = -3 + 21y + -21y

Combine like terms: 13y + -21y = -8y
20 + -8y = -3 + 21y + -21y

Combine like terms: 21y + -21y = 0
20 + -8y = -3 + 0
20 + -8y = -3

Add '-20' to each side of the equation.
20 + -20 + -8y = -3 + -20

Combine like terms: 20 + -20 = 0
0 + -8y = -3 + -20
-8y = -3 + -20

Combine like terms: -3 + -20 = -23
-8y = -23

Divide each side by '-8'.
y = 2.875

Simplifying
y = 2.875

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