120-x=4 5(60 x)-搜答案-大师作文网

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=

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

（X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问：请问X(X+2)=99解为什么就等于9了呢没看懂再答：换成算术法你就明

x=7a=98

25%x=750.25x=75x=75/0.25x=30060%x-35%x=1250.6x-0.35x=1250.25x=125x=500x-40%x=12060%=1200.6x=120x=200

x+60%x=80

x+60%x=80（1+0.6）x=801.6x=80x=80/1.6x=50,这是一道提取共因式的题.

x+五分之一x=2406/5x=240x=200x-60%x=1600.4x=160x=40050%x-33%x=340.17x=34x=200120x-20x=40100x=40x=0.4x+130

x+25%x=25001.25x=2500x=2000x-12%x=4.40.88x=4.4x=545%x+15%x=360.6x=36x=60120%x-x=560.2x=56x=28048%x-1

60%x+25=400.6x=40-250.6x=15x=25x+30%x=521.3x=52x=4019-120%x=719-7=1.2x1.2x=12x=10x-10%x=180.9x=18x=2

30%x=12030x=12000x=400x-60%x=16040%x=16040x=16000x=400120x-20x=40100x=40x=0.450%x-33%x=3417%x=3417x=

3x-60=x

3x-60=x3x-x=602x=60x=30

(x-5)+(x-3)+x+(x+3)+(x+5)=455x=45x=9

x(120+x)*80％=x-76

需要过程?再问：嗯嗯*^O^*再答：数有点大稍等再问：好的好的^W^再答：问题没错？再问：没错再问：算不出来么？再答：整理出来4x^2+475x+380＝0再问：那估计是数抄错了还是要谢谢你^W^

x-15%x=34x=40x+120%z=180(题目有误,请审核原题)40%x=60X=15070%x-45%x=100X=4001/4x+20%x=9X=2030%x=9X=3070%x-55%x

x-60%x-25%x=25%x-30

移项0.25x+0.25x+0.6x-x=300.1x=30x=30÷0.1x=300

再问：三道方程再问：x-2/5x=1/10再问：2/3+1/3x=2再问：3x-5X1/3=7/12

(3x*x+3x*x+x*x)*2=120,

7x²*2=120x²=60/7x=-2√105/7,x=2√105/7

x=602(x/45)+x/90-x/60=12x/90+x/90-x/60=13x/90-x/60=16x/180-3x/180=1x=60