0.3(x+15)-5=0.2x
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
关于一元一次方程的(1)0.6x+0.3=0.9x-0.2 (2)3(x-1)-7(x+5)=30(x+1)(3)(2x
18%x+32%x=2 x+20%x=2.4 x+5%x=4.2 15%x+35%x=0.2
3(x-7)-5(4-x)=15 0.2分之0.1x+0.3+2.5=0.4x-1
0.5/0.8x+0.9=2/x+5+0.3/0.3x—0.2 (/ 分之)
2(0.3x+4)-5(0.2x-1.8)=1 求x的解
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3/x-1=4/x 6/x+1=x+5/x(x+1)
x+x=x+15
X-(1/5X+1/5X-15)=3/5X+15
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550