\(\dfrac{15}{24}-\dfrac{3}{8}-\dfrac{1}{6}=\dfrac{5}{8}-\dfrac{3}{8}-\dfrac{1}{6}=\dfrac{1}{4}-\dfrac{1}{6}=\dfrac{1}{12}\)

\(\dfrac{7}{13}\cdot\dfrac{5}{24}\cdot\dfrac{39}{75}=\dfrac{39}{13}\cdot\dfrac{5}{75}\cdot\dfrac{7}{24}=3\cdot\dfrac{1}{15}\cdot\dfrac{7}{24}=\dfrac{35}{24}\)

`15/24-3/8-1/6`

`=15/24-9/24-4/24`

`=2/24`

`=1/12

d, `7/13 . 5/24 . 39/75`

`=(7.5.13.3)/(13.24.5.5.3)`

`=7/(24.5)`

`=7/120`

2024.3 + 2024.9 - 12.24

= 2024.(3 + 9) - 12.24

= 2024.12 - 12.24

= 12.(2024 - 24)

= 12 . 2000

= 24000

\(2024.3+2024.9-12.24\)

=\(2024\left(3+9\right)-12.24\)

\(=12.2024-12.24\)

\(=12\left(2024-24\right)\)

\(=12.2020=24240\)

\(2\dfrac{3}{13}x\dfrac{27}{58}x2\dfrac{15}{24}x\dfrac{8}{21}:\dfrac{3}{7}\)

= \(\dfrac{29}{13}x\dfrac{27}{58}x\dfrac{63}{24}x\dfrac{8}{21}x\dfrac{7}{3}\)

= \(\dfrac{9x7}{13x2}=\dfrac{63}{26}\)

24 * 1994  * 2 + 16 * 3996 * 3 + 12 * 4010 *4

= (24 * 2) * 1994 + (16 * 3) * 3996 + (12 * 4) * 4010

= 48 * 1994 + 48 * 3996 + 48 * 4010

= 48 * (1994 + 3996 + 4010)

= 48 * 10000

= 480000

thằng ngộ,dạo này lắm bọn đố linh tinh ghê

3*6*11/33*24=144

\(3\times6\times\frac{11}{33}\times24\)

\(=18\times\frac{1}{3}\times24\)

\(=6\times24\)

\(=144\)

đúng 100 % luôn

\(\dfrac{9^{14}\cdot25^5\cdot8^7}{18^2\cdot625^3\cdot24^3}\)

\(=\dfrac{3^{42}\cdot5^{10}\cdot2^{21}}{2^2\cdot3^4\cdot5^{12}\cdot2^9\cdot3^3}=\dfrac{3^{42}\cdot5^{10}\cdot2^{21}}{2^{11}\cdot3^7\cdot5^{12}}\)

\(=\dfrac{3^{35}}{5^2}\cdot2^{10}\)

\(24\cdot5^5+5^2\cdot5^3\)

\(=24\cdot5^5+5^{2+3}\)

\(=24\cdot5^5+5^5\)

\(=5^5\cdot\left(24+1\right)\)

\(=5^5\cdot25\)

\(=5^5\cdot5^2\)

\(=5^7\)

`@` `\text {Ans}`

`\downarrow`

`24 * 5^5 + 5^2 * 5^3`

`= 24*5^5 +`\(5^{2+3}\)

`= 24*5^5 + 5^5`

`= 5^5* (24+1)`

`= 5^5*25`

`= 5^5*5^2`

`= 5^7`

a.5 / 24 x 5 / 12 x 24 = 600 / 288

b.(1 / 4 + 2 / 3)x 4 / 5 = 44/60

a. 5/24 x 5/12 x24 = 600/288 = 25/12 ( rút gọn,tối giản)
b.(1/4 + 2/3) x 4/5 = 1/6 x 4/5 = 4/30 = 2/15 ( rút gọn,tối giản)
c. 3/7 x 16/33 + 16/33 x 4/7 = 16/33 x ( 3/7+4/7) = 16/33 x 7/7=16/33 x 1 = 16/33
CÔNG THỨC = TỬ NHÂN TỬ, MẪU NHÂN MẪU ( RÚT GỌN,TỐI GIẢN NẾU CÓ THỂ)
#HOC_TOT_NHA ><
đúng thì k mk nha