3y+5+5y=21

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Solution for 3y+5+5y=21 equation: 


Simplifying
3y + 5 + 5y = 21

Reorder the terms:
5 + 3y + 5y = 21

Combine like terms: 3y + 5y = 8y
5 + 8y = 21

Solving
5 + 8y = 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 + 8y = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 8y = 21 + -5
8y = 21 + -5

Combine like terms: 21 + -5 = 16
8y = 16

Divide each side by '8'.
y = 2

Simplifying
y = 2

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