[tex] \frac{-18}{-3} [/tex] (divide 3 from numerator and denominator) = [tex] \frac{6}{1} = 6[/tex]
[tex] \frac{2}{7} [/tex] × [tex] \frac{8}{3} [/tex] = [tex] \frac{16}{21} [/tex]
[tex] \frac{3}{8} + \frac{1}{12} = \frac{9}{24} + \frac{2}{24} = \frac{11}{24} [/tex]
