Rút gọn biểu thức này hộ mình vs

giúp mình với mình đang cần gấp

tìm x a , 2 x + 12 : 3 = 8 b , 96 - 2 ( x + 1 ) = 42 c , 147 - 3 ( x + 4 ) = 120

Cho B=1/4+1/5+1/6+..........+1/19.Hãy chứng tỏ rằng B>1 Tính nhanh gái trị của biểu thức M=3/5+2/7-3/11 _________________ 4/5+4/7-4/11 Mn giải giúp mk với ạ,mk đang gấp lắm.Mk cảm ơn trước ạ

Lại là 1 ngày ngày bùn vẽ hộ ny anime bùn nha :<

Combine the following pairs of sentences using a relative clause. 1. She was dancing with a student. He had an intelligent face. 2. Mrs Smith is looking after some children. They are terribly spoilt. 3. The bed has no mattress. Tom is sleeping on the bed. 4. Romeo and Juliet were lovers. Their parents hated each other. 5. The room was very cold. I stayed in it last night. 6. This is Mrs Jones. Her son won the championship last year. 7. I missed the train. I usually catch this train. 8. His girlfriend turned out to be very dishonest. He trusted her completely. 9. This is the story of a man. His wife suddenly loses her memory. 10. A man brought in a small girl. Her hand had been cut by glass.

tìm x : $2\sqrt{8x}+7\sqrt{18}=9-\sqrt{50x}$

The common cold in each gap with ONE suitable word . There is only one disease ( 0 ) called ccommon : the common cold because every year millions of people (1).....it everybody knows the symptoms : a (2).... nose, a slight fever , coughing and ( 3 )..... It is very unpleasant , but nobody snows a ( 4 )..... At the drugstore , there are usally shelves ( 5 ) .... cold ' cures ' . These medicines don't cure a ( 6 )..... , but they do relieve the ( 7 )........(8)......you do , your cold will last a few days and then disappear How can you help ( 9 ).... a cold ? eat well , exercise and you will be fit and (10 ) ....

đây làm hộ mình nhé hứa vote 5 *

với x + y =1 .tìm giá trị lớn nhất của xy