Question

2 . X + 25 + 3 . X = 50

 

Answer 1

`@` `\text {Ans}`

`\downarrow`

`2.x + 25 + 3.x = 50`

`\Rightarrow x.(2 + 3) = 50 - 25`

`\Rightarrow 5x = 25`

`\Rightarrow x = 25 \div 5`

`\Rightarrow x = 5`

Vậy, `x = 5.`

Answer 2

Một con tàu của hợp tác xã thủy sản đánh bắt được 10 tấn 62kg cá gồm cá chim, cá đuối và cá thu. Khối lượng cá thu gấp đôi khối lượng cá chim và cá đuối, khối lượng cá đuối bằng 6/7 khối lượng cá chim. Tính khối lượng mỗi loài cá. Cá thu:  kg Cá đuối:  kg Cá chim:  kg

Answer 3

cíuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu