Question

Срочно!!
Сложение дробей.

Answer 1

$\frac{31}{80} + ( \frac{3}{16} + \frac{39}{80}) = 1 \frac{1}{16}$

$1) \frac{3}{16} + \frac{39}{80} = \frac{3 * 5}{16 * 5} + \frac{39}{80} = \frac{15}{80} + \frac{39}{80} = \frac{54}{80}$

$2) \frac{31}{80} + \frac{54}{80} = \frac{85}{80} = 1 \frac{5}{80} = 1 \frac{1}{16}$