Дам 40 балллов номера а-г прошуу

А) $\frac{1}{7}$ <<img src="https://tex.z-dn.net/?f=+%5Cfrac%7B2%7D%7B5%7D+" id="TexFormula2" title=" \frac{2}{5} " alt=" \frac{2}{5} " align="absmiddle" class="latex-formula">
НОЗ(7,5)=35
б) $\frac{2}{15}$ <<img src="https://tex.z-dn.net/?f=+%5Cfrac%7B3%7D%7B10%7D+" id="TexFormula4" title=" \frac{3}{10} " alt=" \frac{3}{10} " align="absmiddle" class="latex-formula">
НОЗ(15,10)=30
в) $\frac{31}{60}$ <<img src="https://tex.z-dn.net/?f=+%5Cfrac%7B11%7D%7B20%7D+" id="TexFormula6" title=" \frac{11}{20} " alt=" \frac{11}{20} " align="absmiddle" class="latex-formula">
НОЗ(60,20)=60
г) $\frac{4}{15}$ > $\frac{7}{60}$
НОЗ(15,60)=60