Question

8/9(2 1/4a - 3/4 b )-7/30(4 2/7a - 8 4/7 )

Answer 1

8/9*2 1/4а=8/9*9/4а=2а
8/9*3/4b=2/3b
7/30*4 2/7a=7/30*30/7a=a
7/30*8 4/7b=7/30*60/7b=2b
2a-2/3b-a+2b=a+1 1/3b