(6-4 8/15):2,2 скажите пж

Question

(6-4 8/15):2,2 скажите пж

Answer 1

1) 6  -  4 8/15 = 6/1  -  68/15 =(6 × 15  -  68 × 1)/15 = (90  -  68)/15 =  22/15 = 1 7/15
2) 1 7/15 ÷ 2,2 = 1 7/15 ÷ 2 2/10 =22/15 ÷ 22/10 =  22/15  ÷  11/5 = 22/15  ×  5/11 =275/165=  2/3
ответ 2/3

Answer 2

= 1 7/15 : 2 2/10 = 22/15 : 2 1/5 = 22/15 : 11/5 = 22/15 * 5/11 = 2/3

Comments

(5,4-2 1/3):7 2/3=