-2y=7y+21

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Solution for -2y=7y+21 equation: 


Simplifying
-2y = 7y + 21

Reorder the terms:
-2y = 21 + 7y

Solving
-2y = 21 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
-2y + -7y = 21 + 7y + -7y

Combine like terms: -2y + -7y = -9y
-9y = 21 + 7y + -7y

Combine like terms: 7y + -7y = 0
-9y = 21 + 0
-9y = 21

Divide each side by '-9'.
y = -2.333333333

Simplifying
y = -2.333333333

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