Е) 3 1/4 у −4 5/7=3 5/12 у −3 3/14

$3\frac{1}{4} y-4\frac{5}{7} =3\frac{5}{12} y-3\frac{3}{14} \\\\3\frac{1}{4} y-3\frac{5}{12} y=-3\frac{3}{14} +4\frac{5}{7} \\\\\frac{13}{4} ^{3}y -\frac{41}{12}^{1} y= - \frac{42}{14}^{1} +\frac{33}{7}^{2} \\\\\frac{39}{12} y-\frac{41}{12}y=-\frac{42}{14} +\frac{66}{14}.\\\\\frac{2}{12} y=-\frac{21}{14} \\\\\y=-\frac{21}{14} :\frac{2}{12} \\\\y=- \frac{21}{14} *\frac{12}{2} \\\\\y=-\frac{126}{14} \\\\y=-9$