If y - 4 = 11, what is y?

To find the value of ( y ) in the equation ( y - 4 = 11 ), you need to isolate ( y ). This is done by adding 4 to both sides of the equation.

Starting with the original equation:

[ y - 4 = 11 ]

Adding 4 to both sides yields:

[ y - 4 + 4 = 11 + 4 ]

Which simplifies to:

[ y = 15 ]

So, the correct answer is 15. This means that when you add 4 to 11, you are essentially reversing the subtraction that was originally done to isolate ( y ). Hence, the result shows clearly that if you had ( y - 4 ), adjusting by adding 4 brings you back to ( y ), which confirms that the value of ( y ) is indeed 15.