c1 {3/4+1/2}*5/7
=5/4*5/7
=25/28
c2 {3/4+1/2}*5/7
= 3/4*5/7+1/2*5/7
=15/28+5/14
=25/28
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Các câu hỏi tương tự
tinh bang hai cach a)3/4 x 1/2 x 2
cach 1 : .....................................................
cach 2 : .....................................................
b) (3/4 + 1/2) x 5?7
cach 1 : .................................................................
cach 2 : .................................................................
tinh bang hai cach: (3/4+1/2)*5/7
5/7*13/21+2/7*13/21
tinh 7/5+4/3+7/5+4/3
Tinh bang hai cach
a)(2/5+5/6)*3/4
b)(7/12+5/64):2/3
tinh bang cach thuan tien:
3/5+4/7+2/5+1/7+2/7=
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
tinh bang hai cach
3/5 x 7/21 + 7/21 x 2/5
tinh bang hai cach
(6/11+5/11) * 3/7
(6/7-4/7) : 2/5
3/5 * 7/9 - 3/5 *2/9
8/15 : 2/11 + 7/15 :2/11
Tinh Bang Hai Cach
(6/7-4/7):2/5 = ?
8/15 : 2/11 + 7/15 : 2/11=?
Tinh bang cach thuan tien nhat
4/7-2/5+17/7-3/5
giup minh voi minh dang can gap