4y-31=-5(y+8)

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Solution for 4y-31=-5(y+8) equation:


Simplifying
4y + -31 = -5(y + 8)

Reorder the terms:
-31 + 4y = -5(y + 8)

Reorder the terms:
-31 + 4y = -5(8 + y)
-31 + 4y = (8 * -5 + y * -5)
-31 + 4y = (-40 + -5y)

Solving
-31 + 4y = -40 + -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
-31 + 4y + 5y = -40 + -5y + 5y

Combine like terms: 4y + 5y = 9y
-31 + 9y = -40 + -5y + 5y

Combine like terms: -5y + 5y = 0
-31 + 9y = -40 + 0
-31 + 9y = -40

Add '31' to each side of the equation.
-31 + 31 + 9y = -40 + 31

Combine like terms: -31 + 31 = 0
0 + 9y = -40 + 31
9y = -40 + 31

Combine like terms: -40 + 31 = -9
9y = -9

Divide each side by '9'.
y = -1

Simplifying
y = -1

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