(9y+4)-(4y-5)=

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Solution for (9y+4)-(4y-5)= equation:


Simplifying
(9y + 4) + -1(4y + -5) = 0

Reorder the terms:
(4 + 9y) + -1(4y + -5) = 0

Remove parenthesis around (4 + 9y)
4 + 9y + -1(4y + -5) = 0

Reorder the terms:
4 + 9y + -1(-5 + 4y) = 0
4 + 9y + (-5 * -1 + 4y * -1) = 0
4 + 9y + (5 + -4y) = 0

Reorder the terms:
4 + 5 + 9y + -4y = 0

Combine like terms: 4 + 5 = 9
9 + 9y + -4y = 0

Combine like terms: 9y + -4y = 5y
9 + 5y = 0

Solving
9 + 5y = 0

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + 5y = 0 + -9

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

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

Divide each side by '5'.
y = -1.8

Simplifying
y = -1.8

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