y+1=21

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Solution for y+1=21 equation: 


Simplifying
y + 1 = 21

Reorder the terms:
1 + y = 21

Solving
1 + y = 21

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 + y = 21 + -1

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

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

Simplifying
y = 20

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