Question

12/17 : 4 

12 : 6/13

9: 3/5 * 4/15

Answer 1

\(\frac{12}{17}\div4=\frac{12}{17}\cdot\frac{1}{4}=\frac{12}{68}=\frac{3}{17}\)

\(12\div\frac{6}{13}=12\cdot\frac{13}{6}=\frac{156}{6}=26\)

\(9\div\frac{3}{5}\cdot\frac{4}{15}=9\cdot\frac{5}{3}\cdot\frac{4}{15}=\frac{180}{45}=4\)

Answer 2

dùg máy tính

Answer 3

12/17 : 4=3/17

12 : 6/13=26

9 : 3/5 *4/15=4

Đáp số: 3/17 ; 26 ; 4

Answer 4

999 - 888 - 111 + 111 - 111 + 111 - 111

= 111 - 111 + 111 - 111 + 111 - 111

= 0 + 111 - 111 + 111 - 111

= 111 - 111 + 111 - 111

= 0 + 111 - 111

= 111 - 111 

= 0