22X*12% 75% 1000=12X-1000000的解题过程
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/27 10:15:20
6x+3/2x=97.5x=9x=9÷7.5x=1.22x-4/3x=1/22/3x=1/2x=1/2*3/2x=3/4x+9/2=12x=12-9/2x=7.5x-0.8x=220.2x=22x=2
75%X-50=220.75x=22+500.75x=72x=96
x-4/5x=201/5x=20x=20*5x=1002/3x+1/2x=49(2/3+1/2)x=49(7/6)x=49x=49÷(7/6)x=4275+7/10x=1027/10x=102-75=
X-25%X=300.75X=30X=30/0.75X=402X+30%X=9.22.3X=9.2X=9.2/2.3X=475%X-45%X=120.3X=12X=12/0.3X=40X+120%X=
13x+42-5x=104-12x-22把X都弄到一边,转换成13X-5X+12X=104-22-4220X=60得出X=3再问:如果是3两边好像不等啊?再答:不好意识,算错了,X=2,104-22-
1.x-25%x=30X=30/0.75=402.2x+30%x=9.2x=9.2/2.3=43.75%x-45%x=12x=12/0.3=404.x+120%x=33x=33/2.2=15再问:能讲
5x+35=140-2x5x+2x=140-357x=105x=159x-27=70+4x9x-4x=70+275x=97x=97/512+7x=2x+327x-2x=32-125x=20x=4250
X-20%X=120.8x=12x=15再问:为什么是0.8X?再答:X-20%X=﹙1-0.2﹚x=0.8x
同时乘6060×(x/15+x/12+x/10)=1365×604x+5x+6x=8190015x=81900x=81900÷15x=5460很高兴为您解答,【学习宝典】团队为您答题.请点击下面的【选
x/(x+1000)=5%===>(x+1000)/x=20===>x+1000=20x===>19x=1000===>x=1000/19
60X+15X+10X+6X=12091X=120X=120/91
(x+12)*(x+12)=x*x+360x*x+144+24x=x*x+36024x=360-144=216x=216/24=9楼下的你复制我的做什么
(x-22)+(x-24)+(x-27)+(x-20)=xx-22+x-24+x-27+x-20=x4x-93=x4x-x=933x=93x=31
4x^2-45=31x4x^2-31x-45=0(4x+5)(x-9)=0x1=-5/4,x2=9-3x^+22x-24=03x^2-22x+24=0(3x-4)(x-6)=0x1=4/3,x2=6(
应该是-2x²,不是-3x²3x²-x=1原式=9x^4-3x³+15x³-5x²+3x²-7x+2001=3x²(3x
7x-12%=5.87x=2.8+1.27x=4x=4/725+75%x=32.50.75x=32.5-250.75x=7.5x=1080%x-46%x=10.20.34x=10.2x=10.2÷0.
x-4x=102-3x=102x=-34x-0.8x=220.2x=22x=110
=x^2+10x-24+x^2+15x+56-x^2+5x+50=x^2+30x+82=4+60+82=146其实,不化简,直接代入=14*0+9*10+7*8=0+90+56=146也很简单