Answer:
1. 23/20
2. 1
3. 19/15
4. 1 2/3
5. 4
Step-by-step explanation:
[tex]\mathrm{1.\: \frac{2}{5}+\frac{3}{4}\: = \frac{8}{20}+\frac{15}{20}\: =\frac{23}{20} } \\\\\mathrm{2.\: \frac{4}{8}+\frac{1}{2}\: =\frac{1}{2}+\frac{1}{2}\: =\frac{2}{2}\: =1}\\\\\mathrm{3.\: \frac{2}{3}+\frac{3}{5}\: =\frac{10}{15}+\frac{9}{15}\: =\frac{19}{15}}\\\\\mathrm{4.\: 1\frac{3}{9}+\frac{1}{3}\: =1+\frac{2}{3}\: =1\frac{2}{3}}\\\\\mathrm{5.\: 3\frac{5}{10}+\frac{1}{2}\: =3+1\: =4}[/tex]