0.3/X=9/0.3
13.2X+9X=33.3 8X-3X=105 5.4X+X=12.8 X-0.3
0.3X+0.6*(20-X)=9,求X
0.3/X=9/0.3
解方程. 0.3x+13=25 4x-6×9=98 7x+3x+26=74 3.8x-x=0.56.
3(x-2)=5(2x+3) 2(0.3x-4)-5(0.2x+3)=9 2分之x-7=5+x
3(x-2)=5(2x+3) 2(0.3x-4)-5(0.2x+3)=9 2分之x-7=5+x 要过程!
0.3x+12-0.6x=9怎么算?
x*0.3+x*0.3-21=1/2x
2.7x - 4.5=0.3x+0.3
x-0.3x-4.6=0.3
2x-3=5x+7+9x 3-6(x+2/3)=2/3 3/4x-0.4=1/2x+0.3 (x+8)/3=-x
0.5分之x=0.3分之x-18 x=?