3x+20=4x-25怎么解

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3x=x+20怎么解

3x=x+20怎么解把X移到左边2X=20得X=103X=X+203X-X=202X=20X=103x-x=x+20-x2x=20x=10

(x+20)/x=3怎么解

(x+20)/x=3怎么解移项X+20=3X2X=20X=10(x+20)/x=3由题得:x不等于0,1+20/x=3,20/x=2,所以x=10

4(x-100)=3x+100 3x+20=2x+45怎么解?

4(x-100)=3x+1003x+20=2x+45怎么解? 

X+3+X-25+X=77怎么解

X+3+X-25+X=77怎么解3x=99,x=33X+3+X-25+X=773X-22=773X=99X=333x=99x=333*x+2+25=773*x=50x=50/3X+3+X-25+X=773x-22=773=77+223x=9

2.8x-0.8x=20-3x怎么解

2.8x-0.8x=20-3x怎么解2.8x-0.8x=20-3x2x=20-3x2x+3x=205x=20x=4O(∩_∩)O~希望被采纳

3x+4x(16-x)=60怎么解!

3x+4x(16-x)=60怎么解!3x+4x(16-x)=60【4后面是乘号吧.】3x+64-4x=603x-4x=60-64-x=-4x=4

x-3/4x=240-x-40怎么解?

x-3/4x=240-x-40怎么解?x/4+x=2005x=800x=160x1/4=200-xx5/4=200x=160X-3/4X=240-X-401/4X=200-X1/4X+X=2005/4X=200X=160望采纳,谢谢

X×X-X-3/4=0 怎么解

X×X-X-3/4=0怎么解

x(2x+3)=4x+6怎么解

x(2x+3)=4x+6怎么解2x²+3x=4x+62x²-x-6=0(2x+3)(x-2)=0得:x=-3/2或x=2x(2x+3)=4x+6怎么解2x²-x-6=0(2x+3)*(x-2)=0x1=-3/2

x/x²+3-x²+3/4x=3怎么解?x/(x²+3)-(x

x/x²+3-x²+3/4x=3怎么解?x/(x²+3)-(x²+3)/4x=34x应该都在分母里吧?x/(x²+3)-(x²+3)/(4x)=3设(x²+3)/x=y则

1/3X+20+(X-1/4(1/3X+20))=X-3/8X这道题怎么解?

1/3X+20+(X-1/4(1/3X+20))=X-3/8X这道题怎么解?1/3X+20+(X-1/4(1/3X+20))=X-3/8X4+4x(3x+20)-1=5/8x*4(3x+20)8+8x(3x+20)-2=5x(3x+20)6

X=3(X-20)-4怎么解

X=3(X-20)-4怎么解x=3(x-20)-4x=3x-60-4x=3x-64x-3x=-64-2x=-64x=32

20*4X+21*3X=71.5 怎么解

20*4X+21*3X=71.5怎么解20*4X+21*3X=71.580x+63x=71.5143x=71.5x=71.5÷143x=0.580X+63X=71.5143X=71.5X=0.5*是什么

(x+20*3)\4=x-12怎么解?

(x+20*3)\4=x-12怎么解?1,移项,x+20*3=4(x-12)x+60=4x-482,合并同类项3x=1083,解xx=36

x-1+x-2+x-3+x-4+x-5+x-6+x-7=77怎么解速度!

x-1+x-2+x-3+x-4+x-5+x-6+x-7=77怎么解速度!x-1+x-2+x-3+x-4+x-5+x-6+x-7=777x=77+28x=11+4x=15左右同除以7x-4=11x=15原式=7*(x-4)=77x=15

3X×X+6X-5=0 4X×X-9=0 怎么解

3X×X+6X-5=04X×X-9=0怎么解

7x(x-6)+3x=4x(2x+5)怎么解这个方程

7x(x-6)+3x=4x(2x+5)怎么解这个方程 

25%X+(144-x)=x-25%X怎么解

25%X+(144-x)=x-25%X怎么解0.5x+144=2x1.5x=144x=96解决0.25x-x+0.25-x=-144X=96

(x+3)*(x+3)-x*x=81怎么解

(x+3)*(x+3)-x*x=81怎么解x²+6x+9-x²=816x+9=816x=72x=12X^2+6X+9-X^2=816X+9=816X=72X=12

x-(30-x)=(30-x)-x/3,怎么解

x-(30-x)=(30-x)-x/3,怎么解[x-(30-x)]x3=[(30-x)-x/3]x33x-90+3x=90-3x-x3x+3x+3x+x=90+9010x=180x=182x-30=30-4x/310x/3=6010x=18