3 2/25+3/25, 5/8+3 1/8 17 9/16+3/16, 7/19+2 5/19,4 13/45+4/45, 3+7/7, 4+3/3

1) $3 \frac{2}{25} + \frac{3}{25}=3 \frac{5}{25} =3 \frac{1}{5}$
2) $\frac{5}{8} +3 \frac{1}{8} =3 \frac{6}{8}=3 \frac{3}{4}$
3) $17 \frac{9}{16} + \frac{3}{16}=17 \frac{12}{16} =17 \frac{3}{4}$
4) $\frac{7}{19} +2 \frac{5}{19} =2 \frac{12}{19}$
5) $4 \frac{13}{45} + \frac{4}{45}=3 \frac{17}{45}$
6) $3+ \frac{7}{7} =3+1=4$
7) $4+ \frac{3}{3} =4+1=5$