Question

[phamvirthoang]

rut gon phan so sau :7/10;18/64;121/1111;1313/1717

b 4x3x7/12x3x14

quy dong mau so cac phan so:

a 7/30;11/60 va 9/40

b 1/5;5/14;2/21;9/42

c 17/60;5/8;64/90

sorry cac ban minh viet hoi kho doc nhung mong cac ban giai giup minh nha

Answer 1

[Thuong Huynh]

Rút gọn:

7/10 giữ nguyên

18/64=9/32

121/1111=11/101

1313/1717=13/17

Quy đồng:

a.28/120;22/120;27/120.

b.

Answer 2

[Thuong Huynh]

Sorry còn 2 câu bí