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⅘-(12/10*5/12-8/10):(-1/8)=⅘-(½-8/10):(-1/8)=
⅘-(5/10-8/10):(-1/8)=⅘+3/10*(-8)=⅘-12/5=-8/5=-1⅗
b. 4,5 ; 1 i 2/3 - 3,75
4,5:1⅔-3,75=4,5:5/3-3,75=4,5*3/5-3,75=2,7-3,75=-1,05
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5/9 - 10/27 : (- 5/6)
5/9-10/27*(-6/5)=5/9+4/9=9/9=1
c. 2 i 2/3 - 25 : 12 , 5
2⅔-25:12,5=2⅔-2=⅔
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(9-6* 1 i 1/6) * (-2)=(9-6*1 ⅙)*(-2)=(9-6*7/6)*(-2)=(9-7)*(-2)=2*(-2)=-4