a) 3 1/2 - 3 1/6 : ( -2 1/9)=7/2-19/*(-9/19)=7/2+3/2=10/2=5
b) (- 1 1/7 * 1 11/24) :3/5=(-8/7*35/24)*5/3=-5/3*5/3=-25/9=-2 7/9
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a) 3 1/2 - 3 1/6 : ( -2 1/9)=7/2-19/*(-9/19)=7/2+3/2=10/2=5
b) (- 1 1/7 * 1 11/24) :3/5=(-8/7*35/24)*5/3=-5/3*5/3=-25/9=-2 7/9