7y=21y+30

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Solution for 7y=21y+30 equation: 


Simplifying
7y = 21y + 30

Reorder the terms:
7y = 30 + 21y

Solving
7y = 30 + 21y

Solving for variable 'y'.

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

Add '-21y' to each side of the equation.
7y + -21y = 30 + 21y + -21y

Combine like terms: 7y + -21y = -14y
-14y = 30 + 21y + -21y

Combine like terms: 21y + -21y = 0
-14y = 30 + 0
-14y = 30

Divide each side by '-14'.
y = -2.142857143

Simplifying
y = -2.142857143

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