[tex]\dfrac{11}{24} *8=\dfrac{11*8}{24} =\dfrac{88}{24} =3\dfrac{16}{24} =\boxed{3\dfrac{2}{3} }[/tex]
[tex]6*\dfrac{13}{36} =\dfrac{6*13}{36} =\dfrac{78}{36} =2\dfrac{6}{36} =\boxed{2\dfrac{1}{6} }[/tex]
[tex]\dfrac{17}{42} *12=\dfrac{17*12}{42} =\dfrac{204}{42} =4\dfrac{36}{42} =\boxed{4\dfrac{6}{7} }[/tex]
[tex]\dfrac{9}{12} *4=\dfrac{9*4}{12} =\dfrac{36}{12} =\boxed{3}[/tex]
[tex]18*\dfrac{5}{24} =\dfrac{18*5}{24} =\dfrac{90}{24} =3\dfrac{18}{24} =\boxed{3\dfrac{3}{4} }[/tex]
