3(4y-1)=21

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Solution for 3(4y-1)=21 equation: 


Simplifying
3(4y + -1) = 21

Reorder the terms:
3(-1 + 4y) = 21
(-1 * 3 + 4y * 3) = 21
(-3 + 12y) = 21

Solving
-3 + 12y = 21

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + 12y = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 12y = 21 + 3
12y = 21 + 3

Combine like terms: 21 + 3 = 24
12y = 24

Divide each side by '12'.
y = 2

Simplifying
y = 2

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