3(7Y+5)=12

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Solution for 3(7Y+5)=12 equation:


Simplifying
3(7Y + 5) = 12

Reorder the terms:
3(5 + 7Y) = 12
(5 * 3 + 7Y * 3) = 12
(15 + 21Y) = 12

Solving
15 + 21Y = 12

Solving for variable 'Y'.

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

Add '-15' to each side of the equation.
15 + -15 + 21Y = 12 + -15

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

Combine like terms: 12 + -15 = -3
21Y = -3

Divide each side by '21'.
Y = -0.1428571429

Simplifying
Y = -0.1428571429

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