Answer:
119/504
Step-by-step explanation:
-4/7 - 8/9 + 4/7 + 9/8
LCM of all numbers is 504
-288/504 - 448/504 + 288/504 + 567/504 = -736/504 + 288/504 + 567/504 = -448/504 + 567/504 = 119/504