1) [tex] \frac{7}{3} + \frac{1}{2} - \frac{5}{6} = \frac{14}{6} + \frac{3}{6} - \frac{5}{6} = \frac{17}{6} - \frac{5}{6} = \frac{12}{6} = 2[/tex]
[tex] \frac{7}{5} \times \frac{12}{19} \times \frac{38}{60} = \frac{7}{5} \times 12 \times \frac{2}{60} = \frac{7}{5} \times \frac{2}{5} = \frac{14}{25} [/tex]
[tex] \frac{2}{3} \times 90 = 60[/tex]
3/13*x=18->x=13/3*18=13*6=78
2)
a) C
b) B
c) A
d) A
3)
a) F
b) A
c) F
d)
