2 1/2*(2/15-3 5/6)+1/4

Question

2 1/2*(2/15-3 5/6)+1/4

Answer 1

Ответ:

2 1/2*(2/15-3 5/6)+1/4 =5/2*(2/15-23/8)+1/4=5/2*(-37/10)+1/4=-1/2*37/2+1/4=-37/4+1/4=-9