a: \(=\dfrac{18+6}{27+6}=\dfrac{24}{33}=\dfrac{8}{11}\)
b: \(=\dfrac{21\cdot7\cdot11}{11\cdot3\cdot4}=\dfrac{49}{4}\)
Đúng 3
Bình luận (1)
a: \(=\dfrac{18+6}{27+6}=\dfrac{24}{33}=\dfrac{8}{11}\)
b: \(=\dfrac{21\cdot7\cdot11}{11\cdot3\cdot4}=\dfrac{49}{4}\)
Tính:
a) ;
b) ;
c)
d)
Tính:
a)
b) ;
c) ;
d) .
Tính:
A.7/24-1/6......... b.21/16:7/5.......................,......
Tính:
a, 3/4 * 2/9 + 1/3 = b, 1/4 : 1/3 - 1/2 =
Tính:
a) 2/3 + 1/6 - 7/12 = ...
b) (2/3 + 3/4) x 6 = ...
Tính:
a, \(\dfrac{4}{5}\) + \(\dfrac{7}{4}\)
b, \(\dfrac{4}{7}+\dfrac{8}{3}\)
Tính:
a, 3/4 x (5/6 + 2/3)=
b, 3/2 - 2/3 : 2=
Tính:
a. aaa : (a x 3) – 360 : (5 x 2) b. a0a0a : a x 3 - 20202
4. Đặt tính rồi tính:
a) 453 x 205 b) 25620 : 34
c) 452 x 760 d) 39488 : 162