3(3y-8)=21

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Solution for 3(3y-8)=21 equation: 


Simplifying
3(3y + -8) = 21

Reorder the terms:
3(-8 + 3y) = 21
(-8 * 3 + 3y * 3) = 21
(-24 + 9y) = 21

Solving
-24 + 9y = 21

Solving for variable 'y'.

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

Add '24' to each side of the equation.
-24 + 24 + 9y = 21 + 24

Combine like terms: -24 + 24 = 0
0 + 9y = 21 + 24
9y = 21 + 24

Combine like terms: 21 + 24 = 45
9y = 45

Divide each side by '9'.
y = 5

Simplifying
y = 5

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