pomóżcie w zadaniu z matmy tu macie fotki plis daje 30 punktów i naj

2 1/2 + ( 3 1/2 - 2 ) = 2 1/2 + 1 1/2 = 4 7 3/4 - ( 2 1/4 + 2 3/4 ) = 7 3/4 - 5 = 2 3/4 ( 5 3/4 + 4 2/4 ) - ( 3 1/2 + 2 1/2 = 10 1/4 - 6 = 4 1/4 ( 6 1/4- 2 2/4 ) + ( 5 2/4 - 3 3/4) =( 5 5/4 - 2 2/4) + ( 4 6/4 - 3 3/4 ) = 3 3/4 + 1 3/4 = 4 6/4 = 5 2/4 = 5 1/2 ( 4 7/9 - 3 8/9 ) - 8/9 = ( 3 16/9 - 3 8/9 ) - 8/9 = 8/9 - 8/9 = 0