(负五分之三）乘（负六分之五）x(-2)怎样得负一?
问题描述：
(负五分之三）乘（负六分之五）x(-2)怎样得负一?
答
(负五分之三）乘（负六分之五）x(-2)
=-3/5×(-5/6)×(-2)
=[(-3)×(-5)]/(5×6)×(-2)
=1/2×(-2)
=-1谢谢、我解决了嗯, 对啊, 我算出来的答案也是-1,这里面 =-3/5×(-5/6)×(-2)=[(-3)×(-5)]/(5×6)×(-2)这一步是关键,-3和6约分, -5和5约分希望对你有帮助