6/7-1/2+2/3
=5/14+2/3
=43/42
14/2:7/9x4/5
=9x4/5
=36/5
6/7 - 1/2 + 2/3 = 43/42
14/2 : 7/9 x 4/5 = 36/5
Tinh gia tri cua bieu thuc:
a.1/42+1//30+1/20+1/12+1/6+1/2
b.14/6+1/9+19/13+17/9+7/13+4/6
Tinh gia tri bieu thuc bang cach thuan tien nhat :
A= 1/10 x 2/9 x 3/8 x 4/7 x 5/6 x 6/5 x 7/4 x 8/3 x 9/2
6/ tinh gia tri cua bieu thuc M, voi a = 119 va b = 0, biet: M = b: (119 x a + 2005) + (119 : a - b x 2005)
7/ Tinh gia tri bieu thuc a) [17/10 + 7 - 8,7 ] : [ 23/4 - 11/2 + 9/25 ] x [ 12,98 x 0,25 ] + 12,5
ai lam nhanh nhat minh tich cho
tinh gia tri bieu thuc
( 3/15+1/4+7/20 ) * 17 /9
tat ca tren
5 va 1/3+2/5
giúp gium minh voi nhe
tinh gia tri bieu thuc
[6 : 3/5 - 1 va 1/6 x 6/7] : [4 va 1/5 x 10/11 + 5 va 2/11]
\(6\frac{1}{2}-2\frac{1}{3}:\frac{7}{15}\)
tinh gia tri bieu thuc
tinh gia tri bieu thuc
6 : 3/5_11/6 *6/7
tat ca tren
4 va 1/5*10/11+ 5 va 2/11
Tinh gia tri cac bieu thuc sau
(75 * 224 *10 ) : 25
(328 * 17 ) * (1859 -326 ) * ( 49 *24 - 98 *12)
3/11 + 7/22 *2 - 5/ 11
5/8 - 1/3 : 3 + 3 va 4/9
tinh gia tri bieu thuc
65+45*(126:3+12*4)
b, 154-54:3+7*(32562:9-125*5)
