(-5y-4)-4y=23

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Solution for (-5y-4)-4y=23 equation:


Simplifying
(-5y + -4) + -4y = 23

Reorder the terms:
(-4 + -5y) + -4y = 23

Remove parenthesis around (-4 + -5y)
-4 + -5y + -4y = 23

Combine like terms: -5y + -4y = -9y
-4 + -9y = 23

Solving
-4 + -9y = 23

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + -9y = 23 + 4

Combine like terms: -4 + 4 = 0
0 + -9y = 23 + 4
-9y = 23 + 4

Combine like terms: 23 + 4 = 27
-9y = 27

Divide each side by '-9'.
y = -3

Simplifying
y = -3

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