Question

Tim x 

1) x : 14 = 36         2) x : 6 = 52          3) x : 12 = 42                4) x : 15 = 0

5) 4x : 101 = 28      6) 7x : 28 = 5         7) 15x : 60 = 3             8) 774 : x = 18

9) 432 : x = 27        10) 1751 : x = 103   11) 1122 : x = 33         12) 1525 : x = 61

Answer 1

1) \(x\div14=36\)

\(\Leftrightarrow x=36\times14\)

\(\Leftrightarrow x=504\)

Vậy x = 504

2) \(x\div6=52\)

\(\Leftrightarrow x=52\times6\)

\(\Leftrightarrow x=312\)

Vậy x = 312

3) \(x\div12=42\)

\(\Leftrightarrow x=42\times12\)

\(\Leftrightarrow x=504\)

Vậy x = 504

4) \(x\div15=0\)

\(\Leftrightarrow x=0\times15\)

\(\Leftrightarrow x=0\)

Vậy x = 0

5) \(4x\div101=28\)

\(\Leftrightarrow4x=28\times101\)

\(\Leftrightarrow4x=2828\)

\(\Leftrightarrow x=2828\div4\)

\(\Leftrightarrow x=707\)

Vậy x = 707

6) \(7x\div28=5\)

\(\Leftrightarrow7x=5\times28\)

\(\Leftrightarrow7x=140\)

\(\Leftrightarrow x=140\div7\)

\(\Leftrightarrow x=20\)

Vậy x = 20

7) \(15x\div60=3\)

\(\Leftrightarrow15x=3\times60\)

\(\Leftrightarrow15x=180\)

\(\Leftrightarrow x=180\div15\)

\(\Leftrightarrow x=12\)

Vậy x = 12

8) \(774\div x=18\)

\(\Leftrightarrow x=774\div18\)

\(\Leftrightarrow x=43\)

Vậy x = 43

9) \(432\div x=27\)

\(\Leftrightarrow x=432\div27\)

\(\Leftrightarrow x=16\)

Vậy x = 16

10) \(1751\div x=103\)

\(\Leftrightarrow x=1751\div103\)

\(\Leftrightarrow x=17\)

Vậy x = 17

11) \(1122\div x=33\)

\(\Leftrightarrow x=1122\div33\)

\(\Leftrightarrow x=34\)

Vậy x = 34

12) \(1525\div x=61\)

\(\Leftrightarrow x=1525\div61\)

\(\Leftrightarrow x=25\)

Vậy x = 25

_Chúc bạn học tốt_

Answer 2

1 ) x = 506             2 . x = 312                    3 . x = 504                       4.  0 

dãy 2 ko bít làm hì hì             

9 . x= 16               10 . 17               11 . x = 34                12 . x= 25