\(y=\dfrac{4}{3}-\dfrac{16}{5}=-\dfrac{28}{15}\)
\(\Leftrightarrow y=\dfrac{4}{3}-\dfrac{16}{15}\)
\(\Leftrightarrow y=\dfrac{20}{15}-\dfrac{16}{15}\)
\(\Leftrightarrow y=\dfrac{4}{15}\)
\(y=\dfrac{4}{3}-\dfrac{16}{5}=-\dfrac{28}{15}\)
\(\Leftrightarrow y=\dfrac{4}{3}-\dfrac{16}{15}\)
\(\Leftrightarrow y=\dfrac{20}{15}-\dfrac{16}{15}\)
\(\Leftrightarrow y=\dfrac{4}{15}\)
Tìm Y:
Y x 16/64 + Y x 25/100 + Y x 1/4 + Y x 15/60 - 13/15 = 17/15
1.Tính
a)15/16 - 7/16 b)7/4 - 3/4 c)9/5 - 3/5 d) 17/49 - 12/ 49
Lưu ý không tính: 15/16 - 7/16 =8/16 2.
Rút gọn rồi tính
a) 2/3 -3/9 b)7/5 - 15/25
Tính :
2/5 + 11/15 =
7/8 - 7/9 =
11/13 x 26/31 =
16/24 : 4 =
30 : 6/5 =
9/16 : 4 =
1/2 : 1/3 x 8/15 =
Tính bằng cách thuận tiện nhất
A. 3/5 * 6/7 + 3/5 : 7 + 6/5
B. 29/12 : 1/2 - 5/12 : 1/2 - 1/2
C. 2/15 * 4/7 + 4/7 * 2/3 + 4/7 : 5
D. 14/15 * 15/16 * 16/17 : 14/51
4/16+6/15+8/14+3/7+3/5+3/4
4/7x21/16:5/8=
15/8-4/9x6/8+1/6=
7/15+(5/6-1/3)=
Điền số thích hợp vào chỗ chấm :
a) 1/2 =...../4 = 3/..... =...../8 = 5/.....
b) 1/3 = ..../6 = 3/.... = ....../12 = ...../15
c) 3/4 = ...../8 = 9/.... = ...../16 = 18/.....
d) 4/3 = 8/..... = ....../9 = 16/..... = ....../15
e) 6/4 = ...../2 ; 6/3 = 4/......
g) 4/2 = ..../6 = 24/......
15 / 16 : 5/8 x 3/4 = ?
[13/2 + 14/6] - [5/15 + 1/3]
4/16 + 3/4 + 4/16 - 3/4
[35/70 - 2/10] + [14/8 - 1]