Question

$1. begin{array}{ccc}9\56end{array} - (begin{array}{ccc}7\15end{array} - begin{array}{ccc}5\12end{array}) (begin{array}{ccc}3\14end{array} + begin{array}{ccc}1\2end{array})=...  2.(begin{array}{ccc}2\3end{array} + begin{array}{ccc}7\8end{array} - begin{array}{ccc}5\6end{array}) (1 - begin{array}{ccc}5\17end{array})=...$

Answer 1

9/56-97/15-5/12)*(3/14+1/2)=9/56-(28/60-25/60)*(3/14+7/14)=
=9/56-(1/2*5/7)=9/56-1/28=9/56-2/56=7/56=1/8

(2/3+7/8-5/6)*(1-5/17)=(16/24+21/24-20/24)*(17/17-5/17)=
=17/24*12/17=1/2

Answer 2

спс

Answer 3

пжлст