The sum is -5/6
The sum of -2/3 and -4/5 is -1 7/15
-5/3 + 2 1/3 = 2/3
It is 25/3 + 3y.
2.5
The sum is -5/6
The sum of -2/3 and -4/5 is -1 7/15
5 - 2/315/3 - 2/313/3, or 4.333
-5/3 + 2 1/3 = 2/3
It is 25/3 + 3y.
2.5
5 and four-thirds, ie six and one-third.
Adding a negative number is the same as subtracting a positive number. In this instance, 5 + (-2/3) = 4.3 recurring (that is, 4.33333...)
10
(2/3) + (-1/4) = (8/12) - (3/12) = 5/12
-8/5
-5/12