Question

Решите пример по действиям.

Answer 1

42/(1 3/4) - 15,6+1 2/3 = 10 1/15

42/(1 3/4)=42/(7/4)=42*4/7=24
24-15,6=8,4=8 2/5
8 2/5+1 2/3=42/5+5/3=126/15+25/15=151/15=10 1/15

Answer 2

$42:1 \frac{3}{4} -15,6+1 \frac{2}{3} = \\ 1)42:1 \frac{3}{4} =42: \frac{7}{4} =42* \frac{4}{7} =24 \\ 2)24-15,6=8,4 \\ 3)8,4+1\frac{2}{3} = 8 \frac{2}{5}+1 \frac{2}{3} = 8 \frac{6}{15}+1 \frac{10}{15} =9 \frac{16}{15} =10 \frac{1}{15}$