21y=20y-6

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Solution for 21y=20y-6 equation: 


Simplifying
21y = 20y + -6

Reorder the terms:
21y = -6 + 20y

Solving
21y = -6 + 20y

Solving for variable 'y'.

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

Add '-20y' to each side of the equation.
21y + -20y = -6 + 20y + -20y

Combine like terms: 21y + -20y = 1y
1y = -6 + 20y + -20y

Combine like terms: 20y + -20y = 0
1y = -6 + 0
1y = -6

Divide each side by '1'.
y = -6

Simplifying
y = -6

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