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