有理数的加减法的计算题(1题)
问题描述:
有理数的加减法的计算题(1题)
(-5/6)÷(-3又1/6)÷【1/24×(-1又1/4)】-0.25÷1/4
答
(-5/6)÷(-3又1/6)÷【1/24×(-1又1/4)】-0.25÷1/4
=(-5/6)÷(-19/6)÷【1/24×(-5/4)】-0.25×4
=5/6×6/19÷(-5/96)-1
=-5/19×96/5-1
=-96/19-1
=-115/19
=-6又1/19