1. ( 9 5/6 - 2 1/2 ) + 3 7/9 = 2. ( 2 1/4 x 2/5 ) : 1 5/7 =

1. (9 5/6 - 2 1/2) + 3 7/9

(59/6 - 5/2) + 34/9

(59×2/6×2 - 5×6/2×6) + 34/9

(118/12 - 30/12) + 34/9

88/12 + 34/9

88×9/12×9 + 34×12/9×12

792/108 + 408/108

1.200÷6/108÷6

200÷2/18÷2

100/9 atau 11 1/9


2. (2 1/4 × 2/5) ÷ 1 5/7

(9/4 × 2/5) ÷ 12/7

(9×2/4×5) ÷ 12/7

18/20 ÷ 12/7

18/20 × 7/12

18×7/20×12

126÷6/240÷6

21/40