Реши номер 2.164

2.164. Найдите сумму:

а)
\[ \frac16+\frac58=\frac4{24}+\frac{15}{24}=\boxed{\frac{19}{24}} \]

б)
\[ \frac78+\frac5{14}=\frac{49}{56}+\frac{20}{56} =\boxed{\frac{69}{56}}=1\frac{13}{56} \]

в)
\[ \frac7{10}+\frac3{25}=\frac{35}{50}+\frac6{50} =\boxed{\frac{41}{50}} \]

г)
\[ \frac{27}{70}+\frac{16}{105} =\frac{81}{210}+\frac{32}{210} =\boxed{\frac{113}{210}} \]

д)
\[ \frac{11}{18}+\frac1{81} =\frac{99}{162}+\frac2{162} =\boxed{\frac{101}{162}} \]

е)
\[ \frac5{12}+\frac3{44} =\frac{55}{132}+\frac9{132} =\frac{64}{132} =\boxed{\frac{16}{33}} \]

ж)
\[ \frac{15}{56}+\frac{11}{84} =\frac{45}{168}+\frac{22}{168} =\boxed{\frac{67}{168}} \]

з)
\[ \frac{11}{21}+\frac3{49} =\frac{77}{147}+\frac9{147} =\boxed{\frac{86}{147}} \]