\(a,\frac{1}{8}+\frac{5}{8}=\frac{1+5}{8}=\frac{6}{8}=\frac{6:2}{8:2}=\frac{3}{4}\)
\(b,\frac{5}{9}+\frac{7}{9}=\frac{5+7}{9}=\frac{12}{9}=\frac{12:3}{9:3}=\frac{4}{3}\)
Tính roi rut gon:
A).2/7:4/5 b).3/8:9/4 c).8/21:4/7
D).5/8:15/8
Ai lam day du phep tinh va cach rug gon mik tick 2 cai lan
B 3/7+ 4/8 = ?
1. rut gon roi tinh a
a 15/45 + 25/30 b, 2/5 + 9/15 c, 28/32 va 45/72 d, 8/28 va 5/30
tinh roi rut gon
a}12/20 - 6/18
b}8/24-5/25
c) 18/21-12/27
giup minh voi nha!
tinh thuan tien (rut gon gach cheo)
a 2/15* 5/8
b 17/18* 54 51
c 12/81* 9/4
d 7/9* 36/49
e13/27* 54/36
g 19'25* 100/57
5 giờ mình cần rồi ,nhanh lên nhé
rut gon roi tinh 36 phần 16 trừ 10 phàn 8 bang bao nhieu ?
1. Rut gon roi tinh
a, 8/5 - 18/27 b, 12/20 - 6/18 c,8/24 - 5/25 d, 18/21 - 12/27
2. tinh
a, 1/3 + 1/5 - 1/4 b, 7/8 - ( 1/4 + 2/5 ) c, 5/11 - ( 3/5 - 6/11 )
Lam ro rang lun nha cac bn
TINH ROI RUT GON
Tính roi rut gon:
A).3/5;3/4 2/5;3/10 9/8;3/4
B).1/4;1/2 1/8;1/6 1/5;1/10
Ai lm day du phep tinh mik tick.noi luon ra ket qua mik ko tick
