Verified answer

Ответ:

[tex]2 \frac{42}{67} + \frac{25}{67} - 1 = \frac{170}{67} + \frac{25}{67} - 1[/tex]

[tex] \frac{170 + 25}{67} - 1 = \frac{195}{67} - 1 = \frac{195 - 67}{67} = \frac{128}{67} [/tex]