3(7-y)-33=21y-4(3+6y)

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Solution for 3(7-y)-33=21y-4(3+6y) equation: 


Simplifying
3(7 + -1y) + -33 = 21y + -4(3 + 6y)
(7 * 3 + -1y * 3) + -33 = 21y + -4(3 + 6y)
(21 + -3y) + -33 = 21y + -4(3 + 6y)

Reorder the terms:
21 + -33 + -3y = 21y + -4(3 + 6y)

Combine like terms: 21 + -33 = -12
-12 + -3y = 21y + -4(3 + 6y)
-12 + -3y = 21y + (3 * -4 + 6y * -4)
-12 + -3y = 21y + (-12 + -24y)

Reorder the terms:
-12 + -3y = -12 + 21y + -24y

Combine like terms: 21y + -24y = -3y
-12 + -3y = -12 + -3y

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

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

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

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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