www.ypnh.net > 2/5X10十(1/4一0·5)等于多少

2/5X10十(1/4一0·5)等于多少

2/5X10十(1/4一0·5) =4+(-0.25) =3.75

请采纳

如图 等于七分之二

3/2一1/4(x/2一x/4一2)=1/10(5x一5(X十3)/4),3/2一x/16十1/2=1/10(15X/4一15/4),2一X/16=3x/8一3/8,19/8=7x/16,x=38/7

5x-1/3=1/2 5x=1/2+1/3 5x=5/6 x=5/6*1/5 x=1/6 (1-5/8)x=10 x=10÷3/8 x=10*8/3 x=80/3 8-(3/4+2/3x)=0 8-3/4-2x/3=0 2x/3=29/4 x=29/4*3/2 x=87/8 1/5×8÷x=5/8 8/5x=5/8 25x=64 x=64/25

等式两边同乘最小公倍数10X 5X一8=Ⅹ 4X=8 x=2

你的/表示什么?

2(x一5)=4(5X十1)一34 去括号:2x-10=20x+4-34 移项:2x-20X=4-34+10 合并同类项:-18x=-20 化为系数1:x=9分之10

x一(1/3x十25十2/5x十35)=6o 解:x-(11/15x+60)=60 x-11/15x-60=60 4/15x=120 x=120÷4/15 x=450

解:根据题意列式为: [2+1/3+5.4-2-2/3]÷(10.5x5/4) =[5.4+1/3-2/3]÷(21/2x5/4) =[5+2/5-1/3]÷105/8 =[5+6/15-5/15]÷105/8 =76/5x8/105 =608/525

网站地图

All rights reserved Powered by www.ypnh.net

copyright ©right 2010-2021。
www.ypnh.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com