Question

20:(87/14+25/14) - (17/14-11/14):5

Answer 1

$\frac{20}{ \frac{87}{14} + \frac{25}{14} } - \frac{ \frac{17}{14} - \frac{11}{14} }{5} = \frac{20}{ \frac{112}{14} } - \frac{ \frac{6}{14} }{5} = \frac{20}{8} - \frac{ \frac{6}{14} }{5} = 2,5 - \frac{6}{70} = \frac{169}{70} = 2 \frac{29}{70}$

Answer 2

      ..........................=2 29/70

1)   87/14+25/14=112/14=8
2)   20:8=20/8=2 1/2
3)   17/14-11/14=6/14=3/7
4)   3/7 :5=3/7*1/5=3/35
5)   2 1/2 - 3/35=2 35/70 - 6/70=2 29/70