d) y+4\frac{8}{77}=70\frac{2}{77}

д) Решим уравнение:

$$y+4\frac{8}{77}=70\frac{2}{77}$$

$$y = 70\frac{2}{77} - 4\frac{8}{77}$$

$$y = (70-4) + (\frac{2}{77} - \frac{8}{77}) = 66 - \frac{6}{77} = 65 + 1 - \frac{6}{77} = 65 + \frac{77}{77} - \frac{6}{77} = 65 + \frac{71}{77} = 65 \frac{71}{77}$$

Ответ: $$65 \frac{71}{77}$$