4y-9=-105-4(9y+6)

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Solution for 4y-9=-105-4(9y+6) equation:


Simplifying
4y + -9 = -105 + -4(9y + 6)

Reorder the terms:
-9 + 4y = -105 + -4(9y + 6)

Reorder the terms:
-9 + 4y = -105 + -4(6 + 9y)
-9 + 4y = -105 + (6 * -4 + 9y * -4)
-9 + 4y = -105 + (-24 + -36y)

Combine like terms: -105 + -24 = -129
-9 + 4y = -129 + -36y

Solving
-9 + 4y = -129 + -36y

Solving for variable 'y'.

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

Add '36y' to each side of the equation.
-9 + 4y + 36y = -129 + -36y + 36y

Combine like terms: 4y + 36y = 40y
-9 + 40y = -129 + -36y + 36y

Combine like terms: -36y + 36y = 0
-9 + 40y = -129 + 0
-9 + 40y = -129

Add '9' to each side of the equation.
-9 + 9 + 40y = -129 + 9

Combine like terms: -9 + 9 = 0
0 + 40y = -129 + 9
40y = -129 + 9

Combine like terms: -129 + 9 = -120
40y = -120

Divide each side by '40'.
y = -3

Simplifying
y = -3

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