Question

Вычислите по действиям пожалуйста​

Answer 1

$1)3 - frac{3}{4} = 2 frac{4}{4} - frac{3}{4} = 2 frac{1}{4} \ 2)2 frac{1}{4} div 3 = frac{9}{4} times frac{1}{3} = frac{3}{4}$

$3)5 + frac{3}{4} = 5 frac{3}{4}$

$4)2 + frac{7}{8} = 2 frac{7}{8}$

$5)5 frac{3}{4} div 2 frac{7}{8} = frac{23}{4} div frac{23}{8} = \ = frac{23}{4} times frac{8}{23} = 2$

$6)2 frac{11}{15} - frac{1}{3} = 2 frac{11}{15} - frac{5}{15} = \ = 2 frac{6}{15} = 2 frac{2}{5} = 2.4$

$7) frac{1}{12} + frac{2}{3} = frac{1}{12} + frac{8}{12} = frac{9}{12} = frac{3}{4}$

$8)9 div frac{3}{4} = 9 times frac{4}{3} = 12$

$9)2.4 div 12 = 0.2$

$10)2 + 0.2 = 2.2$

Ответ:2,2