21y-1=83

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Solution for 21y-1=83 equation:


Simplifying
21y + -1 = 83

Reorder the terms:
-1 + 21y = 83

Solving
-1 + 21y = 83

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + 21y = 83 + 1

Combine like terms: -1 + 1 = 0
0 + 21y = 83 + 1
21y = 83 + 1

Combine like terms: 83 + 1 = 84
21y = 84

Divide each side by '21'.
y = 4

Simplifying
y = 4

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