Perform the following operation. Simplify if necessary.

-5/9 + 3/10

F you use 40 as the common denominator, then multiply the first fraction by 4/4 and the 2nd fraction by 5/5 310 ⋅ 44 - 58 ⋅ 55 1240 - 2540 once you have a common denominator, you add or subtract the tops, and keep the same denominator: 1240 - 2540 = 12-25 40