Question

Найдите значение выражений номер 537 1 7 - 5 1/4 6 - 5 целых 2/3 312 - 938​

Answer 1

Пошаговое объяснение:

$1) 7- 5\dfrac{1}{4} =6\dfrac{4}{4} -5\dfrac{1}{4} =(6-5) +\left( \dfrac{4}{4} -\dfrac{1}{4} \right)=1+\dfrac{3}{4}= 1\dfrac{3}{4}$

$2) 6- 5\dfrac{2}{3} =5\dfrac{3}{3} -5\dfrac{2}{3} =(5-5) +\left( \dfrac{3}{3} -\dfrac{2}{3} \right)=0+\dfrac{1}{3}= \dfrac{1}{3} ;$

$3) 12- 9\dfrac{3}{8} =11\dfrac{8}{8} -9\dfrac{3}{8} =(11-9) +\left( \dfrac{8}{8} -\dfrac{3}{8} \right)=2+\dfrac{5}{8}= 2\dfrac{5}{8} ;$

$4) 11- 6\dfrac{2}{3} =10\dfrac{3}{3} -6\dfrac{2}{3} =(10-6) +\left( \dfrac{3}{3} -\dfrac{2}{3} \right)=4+\dfrac{1}{3}= 4\dfrac{1}{3} ;$

$5) 8- 3\dfrac{2}{7} =7\dfrac{7}{7} -3\dfrac{2}{7} =(7-3) +\left( \dfrac{7}{7} -\dfrac{2}{7} \right)=4+\dfrac{5}{7}= 4\dfrac{5}{7} ;$

$6) 5\dfrac{6}{13}-2 =(5-2) +\dfrac{6}{13} =3+\dfrac{6}{13}= 3\dfrac{6}{13} ;$

$7) 9\dfrac{3}{10}-4 =(9-4) +\dfrac{3}{10} =5+\dfrac{3}{10}= 5\dfrac{3}{10} ;$$8) 2\dfrac{3}{14}-1 =(2-1) +\dfrac{3}{14} =1+\dfrac{3}{14}= 1\dfrac{3}{14} .$