\(\dfrac{4}{15}+\dfrac{8}{15}+\dfrac{8}{15}=\dfrac{20}{15}=\dfrac{4}{3}\)
\(\dfrac{4}{15}+\dfrac{8}{15}+\dfrac{8}{15}=\dfrac{12}{15}+\dfrac{8}{15}=\dfrac{20}{15}=\dfrac{4}{3}\)
\(\dfrac{4}{15}+\dfrac{8}{15}+\dfrac{8}{15}=\dfrac{20}{15}=\dfrac{4}{3}\)
\(\dfrac{4}{15}+\dfrac{8}{15}+\dfrac{8}{15}=\dfrac{12}{15}+\dfrac{8}{15}=\dfrac{20}{15}=\dfrac{4}{3}\)
tính bằng cách thuận tiện
a) 4/15 x 2016/2018+ 4/15 x 3/2018- 4/15 x 1/2018 b) 8/15 x 8 - 2 x 8/15+3 x 8/15+ 8/158/17 * 4/15 + 8/17 *20/15- 8/17 * 9/15
Ét o ét . giúp tui, cần gấp
a) 4/15 x 2016/2018+ 4/15 x 3/2018- 4/15 x 1/2018 b) 8/15 x 8 - 2 x 8/15+3 x 8/15+ 8/15
Điền dấu >,<,= vào chỗ chấm:
A]11/15.........13/15
B]8/11.......8/9
C]3/4......5/9
D]15/15..........12/12
4/7x21/16:5/8=
15/8-4/9x6/8+1/6=
7/15+(5/6-1/3)=
Help
1/15 - 2/15 + 3/15 -4/15 + 5/15 - 6/15 + 7/15 - 8/15 + 9/15
a.3/7 x 8/11 x 7/3
b.4/15 x 3/8 + 4/15 x 5/8
tính nhanh
1/15-2/15+3/15-4/15+6/15-7/15+8/15-9/15
Tinh nhanh :
a . 1/4 + 2/5 + 6/8 + 9/15 + 8/1
b . 15/31 * 16/43 + 15/31 * 27 4