Answer: -2 1/2
Explanation
if the equation is + but a number is negative, remember that +- = - which means 5/12 + (-2 11/12) = 5/12 - 2 11/12
2 11/12 is bigger than 5/12, so we'll switch it around and it'll become
2 11/12 - 5/12
2 11/12 - 5/12 = 2 6/12
Because 2 11/12 is originally a negative number, +- = -
which means the answer will be negative, so it is -2 6/12.
but we're not done yet, we need to simplify it by dividing it with 6
so the final answer is -2 1/2
if it didn't make any sense at all heres an equation version :
5/12 + (-2 11/12)
= 5/12 - 2 11/12
= 2 11/12 - 5/12
= 2 6/12 (2 11/12 is originally negative so the ans will be negative)
= - 2 6/12 (divide by 6 to simplify)
= - 2 1/2