7×(x-0.1)=70

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7×(x-0.1)=707×(x-0.1)=707×(x-0.1)=707X-0.7=70700.7=7X70.7=7XX=70.7/7X=10.1*说明:/代表除号

7×(x-0.1)=70
7×(x-0.1)=70

7×(x-0.1)=70
7X-0.7=70
70 0.7=7X
70.7=7X
X=70.7/7
X=10.1
*说明:/代表除号

0.3+0.3x=0.39 x= 2x-1.5x=7.6x x= 0.36x÷0.3=1.2 x=6(x+1.2)=18.6 x= 7x+2x = 8.1 x= (x-5)÷3=1.7 x=5(x+1.1)=15.5 x= 9x+25=70 x= 7x-4x=2.1 x= 已知x除以(x*x-x+1)=7,求x*x除以(x*x*x*x+x*x+1)的值 x+(x+20)+(x-10)+70+x=540 . 谁能帮我解下列一元二次方程啊(4x+3)(5-X)=02X^2-4X-5=03x(x-1)=2-2xx(x+6)=7(x-1)^2+2x(x-1)=0-3x^2-4x+4=0(X-1)(X+2)=70(3-X)^2+X^2 7×(x-0.1)=70 解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) x^:12=x:(7-x) x^:12=x:(7-x) 5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)求求大家帮个忙,怎么接着道方程啊! 上面咋写 还有7(x+0.1)=70 12x-5x=16.8 3x-4x5=19解方程 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- (1)2x^2-4x-5=0 (2)-3x²-4x+4=0 (3)3x(x-1)=2-2x (4)(x-1)(x+2)=70 (5)x(x+6(1)2x^2-4x-5=0(2)-3x²-4x+4=0(3)3x(x-1)=2-2x(4)(x-1)(x+2)=70(5)x(x+6)=7(6)(3-x)²+x²=9详细过程……………… 60+2x=185 7x+22=43 16+8x=40 4x-54=14 0.5x-1.2×5=3.8 (x+3)÷2=10.5 6x+4×6=72 5x-16.5×3=25 x+4.8x=29 12.5x-0.9x=52.2 6x+9x-12x=2.37 8x-6=70 12x+48=132 4x+8x=14.4 5.8x-1.6x=12.6 3x+2x×12=42 6(2x-6)=12.6.... (x+x)+(x-x)+(x/x)=11.2 5x/(x+3)(x+2)+2x-5/(x-4)(x+3)=7x-70/(x+2)(x+4)yaoqiu方程结果, (5-x)*3=(7-x)*2 x*(1-0.2)=145-x+8 x*6+x(1+0.1)*5=1518 9+x =(36+x)*0.4 解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8 X^2-2X-4=0 X(X-7)=5X-36 问(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)(/是分数线) X是多少?