Question

rút gọn các phân số về phân số tối giản ; 12/18;49/21;15/35;26/34;11/121

Answer 1

\(\dfrac{12}{18}=\dfrac{12:6}{18:6}=\dfrac{2}{3}\)

\(\dfrac{49}{21}=\dfrac{49:7}{21:7}=\dfrac{7}{3}\)

\(\dfrac{15}{35}=\dfrac{15:5}{35:5}=\dfrac{3}{7}\)

\(\dfrac{26}{34}=\dfrac{26:2}{34:2}=\dfrac{13}{17}\)

\(\dfrac{11}{121}=\dfrac{11:11}{121:11}=\dfrac{1}{11}\)

Answer 2

\(\dfrac{12}{18}=\dfrac{12:6}{18:6}=\dfrac{2}{3};\dfrac{49}{21}=\dfrac{49:7}{21:7}=\dfrac{7}{3};\dfrac{15}{35}=\dfrac{15:5}{35:5}=\dfrac{3}{7};\dfrac{26}{34}=\dfrac{26:2}{34:2}=\dfrac{13}{17};\dfrac{11}{121}=\dfrac{11:11}{121:11}=\dfrac{1}{11}\)

Answer 3

2/3
7/3
5/7
13/17
1/11

Answer 4

49/21=49:7/21:7=7/3

26/34=26:2/34:2=13/17