a) 13/45+ 2 2/15
[tex]a) \frac{13}{45} +2 \frac{2}{15} =\frac{13}{45} +\frac{32}{15} =\frac{13}{45} +\frac{96}{45} =\frac{109}{45} =2\frac{19}{45}[/tex]
b) [-14]+[22]
[tex]b) -14+22=8[/tex]
c) 3 1/2x 21/3
[tex]c) 3 \frac{1}{2} *\frac{21}{3} =\frac{7}{2} *\frac{21}{3}=\frac{49}{2}[/tex]
d) 12-16
[tex]12-16=-4[/tex]
e) 3 1/7-2/9
[tex]3\frac{1}{7} -\frac{2}{9} =\frac{22}{7} -\frac{2}{9} =\frac{184}{63}[/tex]
f) 4/14+5/14
[tex]\frac{4}{14} +\frac{5}{14} =\frac{9}{14}[/tex]
g) 4/6:2/5
[tex]\frac{4}{6} :\frac{2}{5} =\frac{4}{6} *\frac{5}{2} =\frac{10}{6} =\frac{5}{3}=1\frac{2}{3}[/tex]
h) 3 2/5+2 2/3x2 2/5
[tex]3\frac{2}{5} +2\frac{2}{3} *2\frac{2}{5} =\frac{17}{5} +\frac{8}{3} *\frac{12}{5} =\frac{17}{5}+\frac{32}{5}=\frac{49}{5} =9\frac{4}{5}[/tex]