решить пример

42*(1- 5/42）

42*(1-5/42)=42*37/42= 37

[tex]42 \times (1 - \frac{5}{42} ) = 37 \\ \\ 1)1 - \frac{5}{42} = \frac{42}{42} - \frac{5}{42} = \frac{37}{42} \\ \\ 2)42 \times \frac{37}{42} = \frac{42 \times 37}{42} = \frac{37}{1} = 37[/tex]