в) ......=3*(2 4/5 - 4/5)=3 * 2=6
д) ......=5/8 * (2 4/5 - 1 1/5)=5/8 * 1 3/5=5/8 * 8/5=1
ж) .....=4 2/3 * (7 1/12 - 6 1/12)=4 2/3 * 1=4 2/3
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в) ......=3*(2 4/5 - 4/5)=3 * 2=6
д) ......=5/8 * (2 4/5 - 1 1/5)=5/8 * 1 3/5=5/8 * 8/5=1
ж) .....=4 2/3 * (7 1/12 - 6 1/12)=4 2/3 * 1=4 2/3