(4y-9)-(5y-12)=0

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Solution for (4y-9)-(5y-12)=0 equation:


Simplifying
(4y + -9) + -1(5y + -12) = 0

Reorder the terms:
(-9 + 4y) + -1(5y + -12) = 0

Remove parenthesis around (-9 + 4y)
-9 + 4y + -1(5y + -12) = 0

Reorder the terms:
-9 + 4y + -1(-12 + 5y) = 0
-9 + 4y + (-12 * -1 + 5y * -1) = 0
-9 + 4y + (12 + -5y) = 0

Reorder the terms:
-9 + 12 + 4y + -5y = 0

Combine like terms: -9 + 12 = 3
3 + 4y + -5y = 0

Combine like terms: 4y + -5y = -1y
3 + -1y = 0

Solving
3 + -1y = 0

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + -1y = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1y = 0 + -3
-1y = 0 + -3

Combine like terms: 0 + -3 = -3
-1y = -3

Divide each side by '-1'.
y = 3

Simplifying
y = 3

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