14 (3)/(8)+(1)/(6)= 15 (1)/(2)+(4)/(5)= 16) (2)/(6)-(1)/(15)= 17) (5)/(6)-(3)/(10)= 18 (5)/(8)-(2)/(6)= 19) (5)/(8)-(1)/(4)= 20) (4)/(7)-(2)/(14)= 21) (5)/(6)-(5)/(12)= 22) (4)/(5)-(3)/(10)= 23) (2)/(5)-(2)/(15)= (4)/(9)+(5)/(12)=

Here are the solutions to the given problems:<br /><br />1) $(3)\frac {3}{8}+\frac {7}{10}= \frac {9}{8} + \frac {7}{10} = \frac {90+56}{80} = \frac {146}{80} = \frac {73}{40}$<br /><br />2) $(1)\frac {3}{8}+\frac {1}{6}= \frac {3}{8} + \frac {1}{6} = \frac {9+10}{48} = \frac {19}{48}$<br /><br />3) $15 \frac {1}{2}+\frac {4}{5}= 15.5 + \frac {4}{5} = 15.5 + 0.8 = 16.3$<br /><br />4) $16 \frac {2}{6}-\frac {1}{15}= 16.\overline{3} - \frac {1}{15} = 16.\overline{3} - 0.\overline{06} = 16.27\overline{3}$<br /><br />5) $17 \frac {5}{6}-\frac {3}{10}= 17.\overline{8} - \frac {3}{10} = 17.\overline{8} - 0.3 = 17.5\overline{8}$<br /><br />6) $18 \frac {5}{8}-\frac {2}{6}= 18.625 - \frac {1}{3} = 18.625 - 0.\overline{3} = 18.291\overline{6}$<br /><br />7) $19 \frac {5}{8}-\frac {1}{4}= 19.625 - \frac {1}{4} = 19.625 - 0.25 = 19.375$<br /><br />8) $20 \frac {4}{7}-\frac {2}{14}= 20.\overline{57} - \frac {1}{7} = 20.\overline{57} - 0.\overline{14} = 20.42\overline{857}$<br /><br />9) $21 \frac {5}{6}-\frac {5}{12}= 21.\overline{8} - \frac {5}{12} = 21.\overline{8} - 0.416\overline{6} = 21.41\overline{33}$<br /><br />10) $22 \frac {4}{5}-\frac {3}{10}= 22.8 - \frac {3}{10} = 22.8 - 0.3 = 22.5$<br /><br />11) $23 \frac {2}{5}-\frac {2}{15}= 23.4 - \frac {2}{15} = 23.4 - 0.\overline{13} = 23.26\overline{6}$<br /><br />12) $\frac {4}{9}+\frac {5}{12}= \frac {16+15}{108} = \frac {31}{108}$<br /><br />Please note that the answers are in decimal form for better understanding.