Do n \(\in N\Rightarrow n+4\in N\)

Nguyên Đinh Huynh Ronaldo sai

1. \(\dfrac{16.17-5}{16.16-1}:\left(x-\dfrac{2}{3}\right)=\dfrac{1}{3}\)

<=> \(\dfrac{272-5}{256-1}:\left(x-\dfrac{2}{3}\right)=\dfrac{1}{3}\)

<=> \(\dfrac{267}{255}:\left(x-\dfrac{2}{3}\right)=\dfrac{1}{3}\)
<=> x - \(\dfrac{2}{3}=\dfrac{267}{85}\)

<=> x = \(\dfrac{971}{255}\)

@Triều Nguyễn Quốc

chtt nha bạn tick cho mk nha

The New Year party .is.. Miss Loan's.
@Krissy

1. Mai (not play) ____hasn't play____ chess since she was a child

2. They (study) _____have study____ Art since they were a student

3. My father (go) ____went___ fishing last Sunday.

@marathon shukuru

bedroom
@miyuki

d, \(\dfrac{3}{2}\left(x-\dfrac{5}{3}\right)-\dfrac{7}{5}=x+1\)

<=> \(\dfrac{3}{2}x-\dfrac{3}{2}.\dfrac{5}{3}-\dfrac{7}{5}=x+1\)

<=> \(\dfrac{3}{2}x-\dfrac{5}{2}-\dfrac{7}{5}=x+1\)

<=> \(\dfrac{3}{2}x-\dfrac{39}{10}=x+1\)

<=> \(\dfrac{3}{2}x-x=1+\dfrac{39}{10}\)
<=> \(\dfrac{1}{2}x=\dfrac{49}{10}\)

<=> x = \(\dfrac{49}{5}\)

@Nguyễn Trà My

c, x - \(\dfrac{5}{4}=\dfrac{1}{3}-\dfrac{3}{4}x\)

<=> x + \(\dfrac{3}{4}x=\dfrac{1}{3}+\dfrac{5}{4}\)

<=> \(\dfrac{7}{4}x=\dfrac{19}{12}\)

<=> x = \(\dfrac{19}{21}\)

@Nguyễn Trà My