20=3y-1

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Solution for 20=3y-1 equation:


Simplifying
20 = 3y + -1

Reorder the terms:
20 = -1 + 3y

Solving
20 = -1 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
20 + -3y = -1 + 3y + -3y

Combine like terms: 3y + -3y = 0
20 + -3y = -1 + 0
20 + -3y = -1

Add '-20' to each side of the equation.
20 + -20 + -3y = -1 + -20

Combine like terms: 20 + -20 = 0
0 + -3y = -1 + -20
-3y = -1 + -20

Combine like terms: -1 + -20 = -21
-3y = -21

Divide each side by '-3'.
y = 7

Simplifying
y = 7

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