3(4y-7)=15

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Solution for 3(4y-7)=15 equation: 


Simplifying
3(4y + -7) = 15

Reorder the terms:
3(-7 + 4y) = 15
(-7 * 3 + 4y * 3) = 15
(-21 + 12y) = 15

Solving
-21 + 12y = 15

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 + 12y = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 12y = 15 + 21
12y = 15 + 21

Combine like terms: 15 + 21 = 36
12y = 36

Divide each side by '12'.
y = 3

Simplifying
y = 3

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