9y-(4y-12)=33-(12-2y)

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Solution for 9y-(4y-12)=33-(12-2y) equation:


Simplifying
9y + -1(4y + -12) = 33 + -1(12 + -2y)

Reorder the terms:
9y + -1(-12 + 4y) = 33 + -1(12 + -2y)
9y + (-12 * -1 + 4y * -1) = 33 + -1(12 + -2y)
9y + (12 + -4y) = 33 + -1(12 + -2y)

Reorder the terms:
12 + 9y + -4y = 33 + -1(12 + -2y)

Combine like terms: 9y + -4y = 5y
12 + 5y = 33 + -1(12 + -2y)
12 + 5y = 33 + (12 * -1 + -2y * -1)
12 + 5y = 33 + (-12 + 2y)

Combine like terms: 33 + -12 = 21
12 + 5y = 21 + 2y

Solving
12 + 5y = 21 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
12 + 5y + -2y = 21 + 2y + -2y

Combine like terms: 5y + -2y = 3y
12 + 3y = 21 + 2y + -2y

Combine like terms: 2y + -2y = 0
12 + 3y = 21 + 0
12 + 3y = 21

Add '-12' to each side of the equation.
12 + -12 + 3y = 21 + -12

Combine like terms: 12 + -12 = 0
0 + 3y = 21 + -12
3y = 21 + -12

Combine like terms: 21 + -12 = 9
3y = 9

Divide each side by '3'.
y = 3

Simplifying
y = 3

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