2(2y-8)=4y-21

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Solution for 2(2y-8)=4y-21 equation: 


Simplifying
2(2y + -8) = 4y + -21

Reorder the terms:
2(-8 + 2y) = 4y + -21
(-8 * 2 + 2y * 2) = 4y + -21
(-16 + 4y) = 4y + -21

Reorder the terms:
-16 + 4y = -21 + 4y

Add '-4y' to each side of the equation.
-16 + 4y + -4y = -21 + 4y + -4y

Combine like terms: 4y + -4y = 0
-16 + 0 = -21 + 4y + -4y
-16 = -21 + 4y + -4y

Combine like terms: 4y + -4y = 0
-16 = -21 + 0
-16 = -21

Solving
-16 = -21

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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