4y-21=1

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Solution for 4y-21=1 equation: 


Simplifying
4y + -21 = 1

Reorder the terms:
-21 + 4y = 1

Solving
-21 + 4y = 1

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + 4y = 1 + 21

Combine like terms: -21 + 21 = 0
0 + 4y = 1 + 21
4y = 1 + 21

Combine like terms: 1 + 21 = 22
4y = 22

Divide each side by '4'.
y = 5.5

Simplifying
y = 5.5

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