Oblicz.

{{-1{1 \over 2} : {1 \over 3} \cdot 6 - 2 : {1 \over 2} : 3} \over {-0,25 \cdot {1 \over 2} : {2 \over 3} - {2 \over 3} \cdot 0,5 : {1 \over 2}}} = {{-{3 \over 2} : {1 \over 3} \cdot 6 - 2 : {1 \over 2} : 3} \over {-{1 \over 4} \cdot {1 \over 2} : {2 \over 3} - {2 \over 3} \cdot {1 \over 2} : {1 \over 2}}} = {{-{3 \over 2} \cdot 3 \cdot 6 - 2 \cdot 2 : 3} \over {-{1 \over 8} : {2 \over 3} - {1 \over 3} : {1 \over 2}}} = {{-{9 \over 2} \cdot 6 - 4 : 3} \over {-{1 \over 8} \cdot {3 \over 2} - {1 \over 3} \cdot 2}} = {{-27 - {4 \over 3}} \over {-{3 \over 16} - {2 \over 3}}} = = {{-{81 \over 3} - {4 \over 3}} \over {-{9 \over 48} - {32 \over 48}}} = {{-{85 \over 3}} \over {-{41 \over 48}}} = {85 \over 3} \cdot {48 \over 41} = {4080 \over 123} = 33{21 \over 123} = 33{7 \over 41}