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2009-09-09T19:32:03+02:00
1⅞ ×(-6)=15/8*(-6)=-60/4=-15
-1⅕ x 2½=-6/5*3/2=9/5=1⅘
-1¾ ÷ 8 =-7/4:8=-7/4*⅛=-7/32
5,25÷(-1½)=21/4:(-3/2)=21/4*(-⅔)=-7/2=-3½
-1,5÷ (2-⅓)=(-3/2):(5/3)=(-3/2)*(⅗)=-9/5= 1⅘
-1¾+ 7⅕ =-1 15/20+7 4/20=-35/20+144/20=109/20=5 ⁹/₂₀
-2⅜ - ½ =--2⅜ - ⁴/₈=-2⅞
-13,1-2,5=-15,6
17,21-20,3=-3,09
- 0,82× (-3)=2,46