解方程:(x+10)+(x-15)=280-x x+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/10/04 06:31:56

解方程:(x+10)+(x-15)=280-x x+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(...
解方程:
(x+10)+(x-15)=280-x
x+15=3*(109-x)
5(3x-1.4)=2(6x-0.5)
3(x+0.9)=5(x-1.7)
13x-4(2x+5)=17(x-2)-4(2x-1)

x+10+x-15=280-x 2x-5=280-x 3x=285 x=95
x+15=327-3x 4x=312 x=78
15x-7=12x-1 3x=6 x=2
3x+2.7=5x-8.5 11.2=2x x=5.6
13x-8x-20=17x-34-8x+4 10=4x x=2.5

解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 解方程：(x-2)(x^2-6x-9)=x(x-5)(x-3) 解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7) 解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7) 解方程：x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8) 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 解方程（x-2）X（x的平方-6x-9）=x(x-5)X(x-3) 解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3 已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值解方程：(x-2)(x-3)+2(x+6)(x-5)=3(x的平方-7x+15) 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550