x减3分之0.5减去x加4分之0.2=1.6
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/23 07:30:34
很简单啊,如下因为4x^2-3x-2=4所以4x^2-3x=6所以2x^2-(3x)/2=3所以2x^2-(3x)/2+5=3+5=8
x+3/4-1-x/12=x/43(x+3)-(1-x)=3x3x+9-1+x=3x3x+8+x=3x3x-3x+x=8x=8题目是不是这么理解的啊
(1)分式两边同乘10x+2515-2x(2x+5)=115-4x-10x=1-14x=-14x=1(2)分式两边同乘(x-1)(x+1)(x+1)^2-4=x^2-1x^2+2x+1-4=x^2-1
4/5-x+1/3=5/6x=4/5+1/3-5/6x=3/10
X/3-X/4=184X-3X=18*12X=18*12X=216我是老师
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8方程两边分别通分,得[(x+2)(x+3)-(x+1)(x+4)]/[(x+1)(x+3)]=[(x+6)(x+7)-(x+8
解分式方程输入很辛苦.经检验X=7/2是原方程的解.
4(x+y)-3(x-y)=14x+7y=14(x+y)/2+(x-y)/3=6两边同乘以6,得3(x+y)+2(x-y)=365x+y=36则x+7(36-5x)=14x=7,y=1
即1/(x+3)+1/(x-3)=1/(x+3)(x-3)两边乘(x+3)(x-3)x-3+x+3=1x=1/2经检验,x=1/2是方程的解再问:对不起题目打错了。。呵呵是x加3分之1减去3减x分之2
即1/(x+3)+2/(x-3)=12/(x+3)(x-3)两边乘(x+3)(x-3)x-3+2x+6=123x=9x=3经检验,x=3时分母x-3=0是增根舍去所以方程无解
(x-1)/3-(x+2)/6=(4-x)/2等式两边同乘6得:2(x-1)-(x+2)=3(4-x)去括号:2x-2-x-2=12-3x移项:4x=16x=4
x-(x-1)/2=2-(x+2)/3等式两边同时乘以6得6x-3(x-1)=12-2(x+2)6x-3x+3=12-2x-43x+3=8-2x5x=5x=1
3x^2-4x+6=93x^2-4x=3x^2-4/3x=1x^2-4/3x+6=1+6x^2-4/3x+6=7
先将此方程的分母化为整数,再按解方程的步骤依次进行计算即可.原方程可化为:(8x-3)-(25x-4)=12-10x,去括号得:8x-3-25x+4=12-10x,移项、合并同类项得:-7x=11,系
原式=x(x-9)/x(x+3)-(x+3)(x-3)/(x-3)²=(x-9)/(x+3)-(x+3)/(x-3)=(x²-12x+27-x²-6x-9)/(x+3)(
(x-1)(x-3)(x-4)(x-5)-(x-1)(x-2)(x-3)(x-5)=(x-1)(x-2)(x-4)(x-5)-(x-1)(x-2)(x-3)(x-4)(x-1)(x-3)(x-5)(x
0.2分之(3+0.2X)-0.01分之(0.2+0.03X)=0.7515+X-20-3X=0.752X=-5.75X=-2.875