№1.
\(\frac{14}{6}=\frac73=2\frac13;\quad \frac23;\quad \frac{21}{3}=7;\quad \frac{23}{8}=2\frac78;\)
\(\frac{75}{20}=\frac{15}{4}=3\frac34;\quad \frac46=\frac23;\quad \frac8{20}=\frac25;\quad \frac{27}{72}=\frac38.\)
№2.
\(\frac56>\frac29;\quad \frac78>\frac{13}{16};\quad \frac34>\frac7{10};\quad \frac{11}{12}>\frac38.\)
№3.
\(\frac78+\frac34=\frac{13}{8}=1\frac58;\)
\(\frac89-\frac79=\frac19;\)
\(\frac56-\frac38=\frac{11}{24}.\)
№4.
\(\frac12+x=\frac34 \Rightarrow x=\frac14;\)
\(x-\frac12=\frac25 \Rightarrow x=\frac9{10}.\)
