[tex]a)\\\frac45 + \frac18=\frac{32}{40}+\frac5{40}=\frac{37}{40}\\b)\\\frac56+\frac25=\frac{25}{30}+\frac{12}{30}=\frac{37}{30}=1\frac7{30}\\c)\\\frac49+\frac16=\frac{8}{18}+\frac{3}{18}=\frac{11}{18}\\d)\\\frac58+\frac34=\frac58+\frac{6}{8}=\frac{11}8=1\frac38\\e)\\\frac79+\frac45=\frac{35}{45}+\frac{36}{45}=\frac{71}{45}=1\frac{26}{35}\\f)\\\frac4{17}+\frac7{10}=\frac{40}{170}+\frac{119}{170}=\frac{159}{170}\\g)\\\frac7{12}+\frac58=\frac{14}{24}+\frac{15}{24}=\frac{29}{24}=1\frac5{24}\\[/tex]
[tex]h)\\\frac{11}{20}+\frac7{12}=\frac{33}{60}+\frac{35}{60}=\frac{68}{60}=1\frac8{60}=1\frac2{15}[/tex]
