Final answer:
To evaluate the expression x + [y] when x = 1/6 and y = -4/5, substitute the values, find a common denominator, and add the fractions. The result is -19/30.
Step-by-step explanation:
To evaluate the expression when x = 1/6 and y = -4/5, we substitute the given values for x and y into the expression x + [y].
Replacing x with 1/6 and y with -4/5, we get:
x + [y] = (1/6) + (-4/5)
To add fractions, we need a common denominator. In this case, the common denominator is 30.
Converting the fractions to have a common denominator:
(1/6) + (-4/5) = (5/30) + (-24/30) = -19/30
Therefore, the value of x + [y] when x = 1/6 and y = -4/5 is -19/30.