(-2/3)×(+1又1/3)×(-1-1/4)怎么写?

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(-2/3)×(+1又1/3)×(-1-1/4)怎么写?

分数间的乘方通常先算括号内的,把带分数化成假分数再计算
(-2/3)×(+1又1/3)×(-1-1/4)
=(-2/3)×(4/3)×(-5/4)
=(8/9) ×(5/4)
=10/9

(-2/3)×(+1又1/3)×(-1-1/4) =(2/3)×(4/3)×(5/4) =10/9=1又1/9