Помогите решить выполните действия : 1) |7,5|+|-5,3| ; 2) |-12,8|-|5 1/4| ; 3) |2 1/6|:|4 1/3| ; |5,7|*|-2 2/19| ; |-9 3/7|*|7/11| ; |-6,2|:|0,2| .
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2) |-12,8|-|5 1/4|=12,8-5 1/4=12 8/10-5 1/4=12 4/5- 5 1/4=64/5-21/4=256/20-105/20=
=151/20=7 11/20
3) |2 1/6|:|4 1/3| = 2 1/6:4 1/3=13/6:13/3=13/6*3/13=3/6=1/2
4) |5,7|*|-2 2/19| =5,7*2 2/19=5 7/10*2 2/19=57/10*40/19=3/1*4/1=12/1=12
5) |-9 3/7|*|7/11| =9 3/7*7/11=66/7*7/11=6/1=6
6) |-6,2|:|0,2| =6,2:0,2=31