4y+9=4y-9

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Solution for 4y+9=4y-9 equation: 


Simplifying
4y + 9 = 4y + -9

Reorder the terms:
9 + 4y = 4y + -9

Reorder the terms:
9 + 4y = -9 + 4y

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

Combine like terms: 4y + -4y = 0
9 + 0 = -9 + 4y + -4y
9 = -9 + 4y + -4y

Combine like terms: 4y + -4y = 0
9 = -9 + 0
9 = -9

Solving
9 = -9

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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