3/7*5/6+4/7*5/6
= 5/6*(3/7+4/7)
=5/6*1
=5/6
3/7*5/6+4/7*5/6
= 5/6*(3/7+4/7)
=5/6*1
=5/6
giup minh
tinh bang cach thuan tien
7/9 x 5/16 : 5/9 x 4/7
( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 6 x 7 )
tinh bang cach thuan tien nhat
Tinh bang cach thuan tien nhat
4/7-2/5+17/7-3/5
giup minh voi minh dang can gap
tinh bang cach thuan tien nhat a.3/5+4/7+2/5+1/7+2/7 b.1/3+1/6+4/3+2/6+2/3
bai 4: tinh bang cach thuan tien nhat: a, 5/9*5/2+4/9*5/2 , b, 12*3/4-3/4*12/7 lam kieu gi
giup minh voi
tinh bang cach thuan tien nhat
1+2+3+4+5+6+7+8+9:9 =
tinh bang cach thuan tien nhat 47 / 30 : 5/7 - 17/30 x 5/7
tinh bang cach thuan tien nhat
a(6/11 + 5/11)*3/7
b.3/5 * 7/9 +3/5*2/9
c.(6/7 - 4/7) : 2/5
d.(8/15 : 2/11 + 7/15 : 2/11
bai 4 tinh bang cach thuan tien nhat: b, 12/7*3/4-3/4*12/7 giup minh voi