Question

Выполните действие: 1 7/8-2 1/4; 3 4/15-4 17/20​

Answer 1

$\displaystyle 1)1\frac{7}{8}-2\frac{1}{4}=\frac{15}{8}-\frac{9}{4}=-\frac{3}{8}=-0,375\\\\ 2)3\frac{4}{15}-4\frac{17}{20}=\frac{49}{15}-\frac{97}{20}=-\frac{19}{12}=-1\frac{7}{12}$

Answer 2

Ответ:

$1 \dfrac { 7 } { 8 } - 2 \dfrac { 1 } { 4 } =\\\\\frac{15}{8} -\frac{9}{4} =\frac{15}{8} -\frac{18}{8} =-\frac{3}{8} \\\\ 3 \dfrac{ 4 }{ 15 } -4 \dfrac{ 17 }{ 20 } =\\\\\frac{49}{15}-\frac{97}{20} =\frac{196}{60} -\frac{291}{60} =-\frac{95}{60} =-\frac{19}{12}$

Пошаговое объяснение: