X+15/5=0.5-0.1X-0.7/0.3
11x+0.5=15x-0.7 5x+12=8x+3
5分之x+15=0.5-0.3分之0.1x-0.7
方程 x-0.7x+15=0.5x
5/12x-x/4=1/3 0.5x-0.7=6.5-1.3x 3(x-7)+5(x-4)=15 (y-1)/2=2-(
3(x-7)-5(4-x)=15 0.2分之0.1x+0.3+2.5=0.4x-1
0.2x^2-0.3x+0.5-0.1x^2+0.7x-0.11怎么算?
0.04分之0.1X-0.3-X=0.4乘以(0.5X-3)求X
(3x-1)/0.5=(4-x)/0.3+(3x+5)/1.5 x得多少?
x+x=x+15
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6
解方程:2- x+5/6=x- x-1/3,0.1-0.2x/0.03-1=0.7-x/0.4