[tex]1. \\\\a) \\\\2\frac23:\frac67=\frac83*\frac76=\frac43*\frac73=\frac{28}9=3\frac19\\\\b) \\\\4\frac13:\frac35=\frac{13}3*\frac53=\frac{65}9=7\frac29\\\\c) \\\\3\frac34:\frac23=\frac{15}4*\frac32=\frac{45}8=5\frac58\\\\d) \\\\1\frac12:1\frac23=\frac32:\frac53=\frac32*\frac35=\frac9{10}\\\\e) \\\\\frac45:1\frac16=\frac45:\frac76=\frac45*\frac67=\frac{24}{35}\\\\f)\\\\\frac9{20}:2\frac57=\frac9{20}:\frac{19}7=\frac9{20}*\frac7{19}=\frac{63}{380}[/tex]
[tex]2. \\\\a)\\\\\frac{15}{18}:\frac38=\frac{15}{18}*\frac83=\frac5{9}*\frac41=\frac{20}9=2\frac29\\\\b)\\\\\frac45:\frac3{10}=\frac45*\frac{10}3=\frac41*\frac23=\frac83=2\frac23\\\\c) \\\\\frac{49}6:\frac78=\frac{49}6*\frac87=\frac73*\frac41=\frac{28}3=9\frac13\\\\d)\\\\4\frac49:2\frac23=\frac{40}9:\frac83=\frac{40}9*\frac38=\frac53*\frac11=\frac53=1\frac23\\\\e) \\\\[/tex]
[tex]1\frac15:3\frac34=\frac65:\frac{15}4=\frac65*\frac4{15}=\frac25*\frac45=\frac8{25}\\\\f) \\\\5:7\frac12=\frac51:\frac{15}2=\frac51*\frac2{15}=\frac11*\frac23=\frac23[/tex]
