Question

вычислите:
1.(-2/5/11)+(-1/2/11)-7/11=
2.-(-4/1/16)-2/3/4+1/1/8=
3.(-3/8/13)+(-1/4/13)-9/13=
4.-(-5/1/18)-3/7/9+1/2/3=

Answer 1

в первом -26
2=-56 
3 =-89
4=45