\(\left(\dfrac{2}{3}+\dfrac{1}{2}\right):1,4\)

\(=\left(\dfrac{4}{6}+\dfrac{3}{6}\right):\dfrac{7}{5}\)

\(=\dfrac{7}{6}\times\dfrac{5}{7}\)

\(=\dfrac{5}{6}\)

14. for

15. for

16. for

17. since

18. for

19. for

20. since

(hong chắc lắm:v)

\(\dfrac{65}{117}=\dfrac{65:13}{117:13}=\dfrac{5}{9}\)

\(\dfrac{152}{114}=\dfrac{152:38}{114:38}=\dfrac{4}{3}\)

1. Breakfast

2. Get up

3. Go to bed

4. Go home

5. Dinner

\(2x+8=0\)

\(\Leftrightarrow2x=-8\)

\(\Leftrightarrow x=-4\)

0C

1B

2E

3D

4A

5F

;3