7y-2=21y+21

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


Simplifying
7y + -2 = 21y + 21

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

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

Solving
-2 + 7y = 21 + 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.
-2 + 7y + -21y = 21 + 21y + -21y

Combine like terms: 7y + -21y = -14y
-2 + -14y = 21 + 21y + -21y

Combine like terms: 21y + -21y = 0
-2 + -14y = 21 + 0
-2 + -14y = 21

Add '2' to each side of the equation.
-2 + 2 + -14y = 21 + 2

Combine like terms: -2 + 2 = 0
0 + -14y = 21 + 2
-14y = 21 + 2

Combine like terms: 21 + 2 = 23
-14y = 23

Divide each side by '-14'.
y = -1.642857143

Simplifying
y = -1.642857143

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