0.3+0.2x /0.2 +30%x=0.75
0.2(X-11)=12-0.3X
x-0.2x=80 求x
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
(1)3x(x+0.2)=4x(x-1.1)
X-X×0.2=1.18
0.2x+0.4x=12 x=?20x+x=420 x=?
1-0.5x/0.3-2/3x=0.3x/0.2x+1
解方程一.0.2x=0.25x-18 二.0.3x+x=69
解方程 (x+x+三分之一x)乘以3=308 0.3x+0.2乘以(160-x)=36 x+10=40%乘以(36-x+
3x-2(4x+8)=2.4 6.5-(x+1.3)=2.2 0.2(x-4)=0.3(x-1
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2
3(x-2)=5(2x+3) 2(0.3x-4)-5(0.2x+3)=9 2分之x-7=5+x