Câu hỏi của TRịnh Kim Ngân

Question

Rút gọn các phân số sau về phân số tối giản:

a...

Nguyễn Lê Phước Thịnh · Accepted Answer

a: $\dfrac{8}{16}=\dfrac{8:8}{16:8}=\dfrac{1}{2}$

b: $\dfrac{10}{30}=\dfrac{10:10}{30:10}=\dfrac{1}{3}$

c: $\dfrac{24}{18}=\dfrac{24:6}{18:6}=\dfrac{4}{3}$

d: $\dfrac{20}{28}=\dfrac{20:4}{28:4}=\dfrac{5}{7}$

Câu trả lời:

a: $\dfrac{8}{16}=\dfrac{8:8}{16:8}=\dfrac{1}{2}$

b: $\dfrac{10}{30}=\dfrac{10:10}{30:10}=\dfrac{1}{3}$

c: $\dfrac{24}{18}=\dfrac{24:6}{18:6}=\dfrac{4}{3}$

d: $\dfrac{20}{28}=\dfrac{20:4}{28:4}=\dfrac{5}{7}$

TRịnh Kim Ngân · Answer

a) 816=8:816:8=12816=8:816:8=12;

c) 2418=24:618:6=432418=24:618:6=43;

b) 1030=10:1030:10=131030=10:1030:10=13

d) 2028=20:428:4=57

Câu trả lời:

a) 816=8:816:8=12816=8:816:8=12;

c) 2418=24:618:6=432418=24:618:6=43;

b) 1030=10:1030:10=131030=10:1030:10=13

d) 2028=20:428:4=57

1	=	11 \times× 33 \times×	==	1212
55	55 \times× \times× 44

44	=	44 \times× 55 \times× 44	==	8080
33	33 \times× \times× 44

11	=	11 \times× 33 \times×	==
44	44 \times× 33 \times×

	=	77	=	5656
4848	88