3y+5=21

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Solution for 3y+5=21 equation: 


Simplifying
3y + 5 = 21

Reorder the terms:
5 + 3y = 21

Solving
5 + 3y = 21

Solving for variable 'y'.

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

Add '-5' to each side of the equation.
5 + -5 + 3y = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 3y = 21 + -5
3y = 21 + -5

Combine like terms: 21 + -5 = 16
3y = 16

Divide each side by '3'.
y = 5.333333333

Simplifying
y = 5.333333333

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