456
Giới thiệu về bản thân
\(10+5x=75:5\)
\(10+5x=15\)
\(5x=15-10\)
\(5x=5\)
\(x=5:5\)
\(x=1\)
Vậy...
Cách làm: trong ngoặc trước , ngoài ngoặc sau , nhân chia trước , cộng trừ sau.
\(\dfrac{5}{8}-\left[\dfrac{2}{3}-\left(\dfrac{5}{3}-\dfrac{1}{2}\right)\right]\)
\(=\dfrac{5}{8}-\left[\dfrac{2}{3}-\dfrac{5}{3}+\dfrac{1}{2}\right]\)
\(=\dfrac{5}{8}-\dfrac{2}{3}+\dfrac{5}{3}-\dfrac{1}{2}\)
\(=\left(\dfrac{5}{8}-\dfrac{1}{2}\right)+\left(\dfrac{2}{3}-\dfrac{5}{3}\right)\)
\(=\dfrac{1}{8}+-1\)
\(=\dfrac{1}{8}+-\dfrac{8}{8}\)
\(=-\dfrac{7}{8}\)
Bài giải:
Hiệu của 12 giờ với 6,5 giờ là:
12 giờ - 6,5 giờ = 5,5 giờ
Đáp số : 5,5 giờ
\(\dfrac{888}{999}=\dfrac{888:111}{999:111}=\dfrac{8}{9}\)
\(\dfrac{2525}{2727}=\dfrac{2525:101}{2727:101}=\dfrac{25}{27}\)
\(\dfrac{382382}{383383}=\dfrac{382382:1001}{383383:1001}=\dfrac{382}{383}\)
\(\dfrac{156156156}{171171171}=\dfrac{156156156:1001001}{171171171:1001001}=\dfrac{156}{171}\)
$\color{#CCCCCC}{\text{No one in this class is as tall as Richard}}$
$\color{#CCCCCC}{\text{= > A.Richard is the tallest in this class.}}$
\(\dfrac{76}{57}=\dfrac{76:19}{57:19}=\dfrac{4}{3}\)
\(\dfrac{36}{54}=\dfrac{36:18}{54:18}=\dfrac{2}{3}\)
\(\dfrac{51}{17}=\dfrac{51:17}{17:17}=3\)
\(\dfrac{25}{125}=\dfrac{25:25}{125:25}=\dfrac{1}{5}\)
$\color{#CCCCCC}{\text{15958388215179}}$
Cho mình hỏi một xíu được không?
Acc mà bạn đang dùng là acc phụ ạ?
$\color{#87CEFA}{\text{105/375 = 105 ÷ 15}}$$\color{#B0E0E6}{\text{/375 ÷ 15 = 7/25}}$
`a, 12.53 + 53.172 + 184.47`
`= (12 + 172).53 + 184.47`
`= 184.53 + 184.47`
`= 184.(53 + 47)`
`= 184.100`
`= 18400`
`b,43.27 + 93.43 + 57.61 + 59.57`
`= (27 + 93).43 + (61 + 59).57`
`= 120.43 + 120.57`
`= 120.(43 + 57)`
`= 120.100`
`= 12000`
`c,43.29 + 57.29 - 73.26 - 27.26`
`= (43 + 57).29 - (73 - 27).26`
`= 100.29 - 100.26`
`= 100.(29 -26)`
`= 100.3`
`= 300`
`d, 53. 39 + 47. 39 - 53 . 21 - 47 . 21`
`= (53 + 47).39 - (53 - 47).21`
`= 100.39 - 100.21`
`= 100.(39 - 21)`
`= 100.18`
`= 1800`
`d, 64,4x = 45`Đề sai k đó?;-);-);-);-)