a) \(2\left(x-3\right)-12=-10\)

\(\Leftrightarrow2x-6=2\)

\(\Leftrightarrow x=4\)

b) \(x-12=-13+1+\left|-13\right|\)

\(\Leftrightarrow x-12=-13+1+13\)

\(\Leftrightarrow x-12=1\)

\(\Leftrightarrow x=13\)

a. 2 ( x - 3 ) - 12 = - 10

=> 2 ( x - 3 ) = 2

=> x - 3 = 1

=> x = 4

b. x - 12 = ( - 13 ) + 1 + | - 13 |

=> x - 12 = - 13 + 13 + 1

=> x - 12 = 1

=> x = 13

45 - ( 5 - 3x )³ = 2 . 3²

=> 45 - ( 5 - 3x )³ = 2 .9 = 18

=> ( 5 - 3x )³ = 27

=> ( 5 - 3x )³ = 3³

=> 5 - 3x = 3

=> 3x = 2

=> x = 2/3

\(45-\left(5-3x\right)^3=2.3^2\)

\(\Leftrightarrow45-\left(5-3x\right)^3=18\)

\(\Leftrightarrow\left(5-3x\right)^3=27\)

\(\Leftrightarrow\left(5-3x\right)^3=3^3\)

\(\Leftrightarrow5-3x=3\Leftrightarrow x=\frac{2}{3}\)

\(\left(\frac{4}{3}\sqrt{3}+\sqrt{2}+\sqrt{3\frac{1}{3}}\right)\left(\sqrt{1,2}+\sqrt{2}-4\sqrt{\frac{1}{5}}\right)\)

\(=\frac{4\sqrt{10}}{5}+\frac{4\sqrt{6}}{3}-\frac{16\sqrt{15}}{15}+\frac{2\sqrt{15}}{5}+4-\frac{4\sqrt{10}}{5}+2+\frac{2\sqrt{15}}{3}-\frac{4\sqrt{6}}{3}\)

\(=4\)

bạn phải tính từng bước chứ @

1.The window was broken and some money were taken away by the boy
2.The tree in the garden was cut down yesterday
3.Some arles about the damage of 11^th storm are written by Mai
4.Coffee was being made while I walked into the kitchen
5.The electrical sockets was being fixed by my father at this time yesterday
6.Hanoi is going to be visited by Mr.Han on his work next week
7.An art exhibition will be organized by this company next month
8.Those books will be returned to the library by Tom tomorrow
9.Newspaper will be delivered to him by the postman next week

Gọi số đó là x. Ta phải có x + 1 chia hết cho 3; 5 và 7.

Vậy x + 1 nhỏ nhất có thể bằng : 3 * 5 * 7 = 105

x + 1 lớn nhất có thể bằng : 105 * 5 = 945

x + 1 = 945

      x = 945 - 1 = 944

Vậy số đó là 944.

                        Đ/s: 944

( 15,25 - x ) : 25 = 400

=> 15,25 - x = 10000

=> x = - 9984,75

\(\left(15,24-x\right):25=400\)

\(15,24-x=10000\)

\(x=15,24-10000\)

\(x=-998476\)

Vậy x = -998476

0.      You drive fast here.                                                                                    m _o_  _t_  _o_  _r_  _w_  _a_  _y_

1.      Go here when you need petrol for your car.                                              gas station

2.      This will take you over a river or another road.                                          b oat

3.      You must show this person your driving licence if he asks for it.              p olice

4.      You can go left, right or straight on at this place where two roads meet.    c rossroads

5.      If these are red, the traffic has to wait.                                                       l ight trafic