7y-21y=

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Solution for 7y-21y= equation: 


Simplifying
7y + -21y = 0

Combine like terms: 7y + -21y = -14y
-14y = 0

Solving
-14y = 0

Solving for variable 'y'.

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

Divide each side by '-14'.
y = 0

Simplifying
y = 0

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