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11 11*3/11=3
22 22*3/11=6
66 66*3/11=18
99 99*3/11=27
B) 2,25
4 2,25*4=9
8 2,25*8=18
12 2,25*12=27
14 2,25*16=36
C) -6 2/7=-44/7
7 7*(-44/7)=-44
14 14*(-44/7)=-88
21 21*(-44/7)=-132
-28 (-28)(-44/7)=176
D) -0,8=-4/5
5 5*(-4/5)=1*(-4)=-4
-5 (-5)(-4/5)=-1*(-4)=4
10 10(-4/5)=2*(-4)=-8
-10 -10(-4/5)=-2*(-4)=8