(+71/4)-(+6.25)-(-17/2)-(+0.75)-89/4
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(+71/4)-(+6.25)-(-17/2)-(+0.75)-89/4
(+71/4)-(+6.25)-(-17/2)-(+0.75)-89/4
=71/4-25/4+17/4-1/4-89/4
=(71-25+17-1-89)/4
=-27/4
再问: -27÷9/4×(-9/4)+4-4×(-3/1) 要过程
再答: -27÷9/4×(-9/4)+4-4×(-3/1) =-27×4/9×(-9/4)+4-4×(-3/1) =27+4-3/4 =31-3/4 =29又3/2
再问: (-2/3)×1/2+(-1/3)+(-0.5) 要过程
再答: (-2/3)×1/2+(-1/3)+(-0.5) =-1/3-1/3-1/2 =-2/3-1/2 =-7/6
再问: (2/3-1/4-3/8)×(-24) 要过程
再答: (2/3-1/4-3/8)×(-24) =-2/3×24+1/4×24+3/8×24 =-16+6+9 =-1 事不过三,再追问就要扣分了,有问题再发到网上啊
=71/4-25/4+17/4-1/4-89/4
=(71-25+17-1-89)/4
=-27/4
再问: -27÷9/4×(-9/4)+4-4×(-3/1) 要过程
再答: -27÷9/4×(-9/4)+4-4×(-3/1) =-27×4/9×(-9/4)+4-4×(-3/1) =27+4-3/4 =31-3/4 =29又3/2
再问: (-2/3)×1/2+(-1/3)+(-0.5) 要过程
再答: (-2/3)×1/2+(-1/3)+(-0.5) =-1/3-1/3-1/2 =-2/3-1/2 =-7/6
再问: (2/3-1/4-3/8)×(-24) 要过程
再答: (2/3-1/4-3/8)×(-24) =-2/3×24+1/4×24+3/8×24 =-16+6+9 =-1 事不过三,再追问就要扣分了,有问题再发到网上啊
(+71/4)-(+6.25)-(-17/2)-(+0.75)-89/4
1、6分之83-(-4分之3)+6分之5-(-12分之7) 2、4分之71-6.25-(﹣2分之17)-0.75-4分之
7又4分之3-(+6.25)-(-8又2分之1)-0.75-(-22又4分之1)
5/17*(-3/7)+5/17*(-4/7)-12/17 (-0.75)*(-3又1/8)-0.75*(-4又7/8)
问几道数学题 简算19分之8*21分之2+19分之2*21分之11(51分之4-71分之4)*17-71分之3(9.3*
(0.75)+(-2又4分之1)等于
-32(0.75)-8*3/4+36*(-3/2)
1.(-2 3/4)+(+12 5/7)+(-4.125)+(+0.75)+(+1/8);
简算(数学)(1)63*18+37*18(2)25*7*4(3)88*125(4)199*71+71(5)188+63+
+17*3/4-(+6.25)-(-8*1/2)-0.75-22*1/4
(+17又3/4)-(6.25)-(-8又1/2)-(+0.75)-22又1/4
17又四分之三减去(正6.25)减去(8又二分之一)加上(负0.75)减去(正22又四分之1)