-0.4x+0.9/0.5=0.2x+0.3/0.3+1d等于几d是打错的(-0.4x+0.9)/0.5=(0.2x+0.3)/0.3+1

x/0.5-0.4x-0.6/0.2=2(-x+3) x-30-0.2x=0.5x 解方程:(0.4x-0.9)/0.5-(0.3x+0.2)/0.3=(x-5)/2 (3x-1)/2+(3-2x)/3-(0.4x+0.9)/0.5=0 0.4x+0.9/0.5-0.03-0.02x/0.03-x-5/2=0 0.2x+0.4x=12 x=?20x+x=420 x=? (0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少? 0.02x-0.01/0.03-0.4x+0.2/0.5-3X+2/4=-3求x 帮个忙 解个方程15X+5=8X+40 15x+5=8x+40 9x-0.9*7=2x+2.1 3x-0.2*10=2x 96+6x=90+8x 0.5x+30-0.3x=420 4x-2=9x-6 2.1x-10.8=1.8, (x-0.4)÷0.5=2.4 ,0.9(x+0.4)=0.2.1x-10.8=1.8, (x-0.4)÷0.5=2.4 ,0.9(x+0.4)=0.45的方程,快速,必采纳哦! -0.4x+0.9/0.5=0.2x+0.3/0.3+1d等于几d是打错的(-0.4x+0.9)/0.5=(0.2x+0.3)/0.3+1 解方程(0.4x+0.9/0.5 )- (x-5/2) - (0.03+0.02x/0.03) =0如题(0.4x+0.9/0.5 )- (x-5/2) - (0.03+0.02x/0.03) =0 0.5x+3(0.3-0.2x)≥0.4x f(x)=｛x x≥0-x X 0.4x-2.1/0.5-0.5-0.2x/0.03=0.6 0.4x+0.9/0.5-0.3x+0.1/.2-0.75-0.5x/0.75=0怎么解,求你了 6x+0.4x-0.2x=4.5 解方程-0.4x+0.1=-0.5x+0.2