搜搜做题作业网(x 25) (x-27) x=103
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/28 06:16:40
x+2x×10=10x+2x+36x+20x=12x+3621x-12x=369x=36x=4
160*25%-1.3x=17.9.160*x(1/4)-1.3x=17.9.=22.11.3x=40-17.9.1,3x=22.1.x=22.1/1.3x=17.(3/2)x+x/4=3.3各项同乘
(9X+8)(-9X+80)=1855-81X^2+648X+640-1855=0X^2-8X+15=0X=3或5
1）3.5x0.25+360x0.25+0.25x36.5=0.25x(3.5+360+36.5)=100.2)(7.25x0.4+2.75x0.4）/0.1=0.4x(7.25+2.75)/0.2=
(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=(x/2)*(2/x(x+2))+(2/(x+2)(x+4))+.+2/(x+8)(x+10)=(x/2)*[1/x
2.25X（-2.3）X25分之3=-9/4×3/25×2.3=-0.27×2.3=-0.621（-2.1）X6.5X（-七分之三）=2.1×3/7×6.5=0.9×6.5=5.85
（1）原式＝-5.175×0.12=-0.621（2）原式=-13.65×（-3/7）=-1365/100×（-3/7）=4095/700=5.85
（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
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-22)+(x-24)+(x-27)+(x-20)=xx-22+x-24+x-27+x-20=x4x-93=x4x-x=933x=93x=31
1、（20+4）x25=20x25+4x25=500+100=6002、35x37+65x37=(35+65)x37=100x37=37003、25x41=25x(40+1)=25x40+25x1=1
(8-0.8)x25=8x25-0.8x25=200-20=180
原式;（x+15）×25/100=x（化简）（x+15）×1/4=xx/4+15/4=x3x/4=15/43x=15x=5
12*x25%+(3200-12x)*20%=7003x+640-2.4x=7000.6x+640=7000.6x=60x=100
=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
3.14x11/8+0.314x25/4-3.14x.02=3.14x11/8+3.14x2.5/4-3.14x.02=3.14x11/8+3.14x5/8-3.14x.02=3.14x（11/8+5
5X64X25X125X93=5X2×4×8X25X125X93=(5X2)×(4X25)×(8X125)X93=93X10×100×1000=93000000（1-1/3-2/5-1/4）X60=1
〔56÷（8-1）+25〕x8
25％X+3=三分之二x60.25X=4-30.25X=1X=1÷0.25X=4五分之九x25％+2.2—0.25=1.8×0.25-0.25+2.2=(1.8-1)×0.25+2.2=0.8×0.2