初一数学五道计算题求帮忙!!
2个回答
展开全部
(1) 6除以(-2)x(-1/3)=6x(-2)x(-1/3)
=4.
(2) 127除以(-8/19)x0=0.
(3) 4除以(-5)x(-1/5)=4x(-1/5)x(-1/5)
=4/25.
(4) 42x(-2/3)+(3/4)除以(-0.25)
=-28+(3/4)x(-4)
=-28-3
=-31.
(5) -6除以(-2)x(1/2)-8除以(-4/3)
=-6x(-1/2)x(1/2)-8x(-3/4)
=3/2+6
=15/2.
=7.5.
=4.
(2) 127除以(-8/19)x0=0.
(3) 4除以(-5)x(-1/5)=4x(-1/5)x(-1/5)
=4/25.
(4) 42x(-2/3)+(3/4)除以(-0.25)
=-28+(3/4)x(-4)
=-28-3
=-31.
(5) -6除以(-2)x(1/2)-8除以(-4/3)
=-6x(-1/2)x(1/2)-8x(-3/4)
=3/2+6
=15/2.
=7.5.
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询