2) 8:(-2)*9 +17 -48
3) -61-40:((-4)*2) -17
4) (-5)* (1/2-5/6)
5) (2/7-1): 20/21
6) 0,8*(-10)-(-5)*(-0,1)
7) (6,1-8,5):(-0,8)
8) 6:(-5,4-3,6)
9) 3/11:(-0,3)+(-1,2)*(5/6)
10) -x*(-6)= -540
11) x:(-0,5)=0,18
12)-1/5x= -11/20
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Answers & Comments
2) 8:(-2)*9 +17 -48=-67
3) -61-40:((-4)*2) -17=-126
6) 0,8*(-10)-(-5)*(-0,1)=-8,5
7) (6,1-8,5):(-0,8)=3
8) 6:(-5,4-3,6)=