Question

2 ⅝ ÷ ( 15-5 1/16 ×2 ⅔)=​

Answer 1

2 ⅝ ÷ ( 15-5 1/16 ×2 ⅔)= 1 1/20

1) 5 1/16 × 2 2/3 = 81/16 × 8/3(скорочуєм 81 і 3 на 3, 16 і 8 на 8) = 27/2 = 13 1/2

2) 15 - 13 1/2 = 2 1/2

3) 2 5/8 : 2 1/2 = 21/8 : 5/2 = 21/8 × 2/5(скорочуєм 8 і 2 на 2) = 21/4 × 1/5 = 21/20 = 1 1/20