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
giup minh
tinh bang cach thuan tien
7/9 x 5/16 : 5/9 x 4/7
tinh bang cach thuan tien nhat
1+2+3+4+5+6+7+8+9:9 =
bai2: tinh gia tri bieu thuc: 9/11*(6/7-5/6) lam kieu gi
giup minh voi
minh tich 5 ban thoi nha
giup minh
tinh bang cach thuan tien
3/7 x 5/6 + 4/7 x 5/6
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(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
Tinh bang cach thuan tien nhat
3/2 + 4/9 + 4/7 + 5/9
tinh = cach thuan tien nhat
4/9 + 8/9 + 12/9 + 16/9 + ........ + 48/9 + 52/9 + 56/9