(0.2x+0.5)/0.5-(0.03+0.02x)/0.03=(x-5)/2
0.2x+0.5/0.5-0.03+0.02x/0.03=1 x-1/0.3-x+2/0.5=1
解方程:(0.4x-9)/0.5-(x-5)/2=(0.03+0.02x)/0.03
解下列方程:0.03+0.02x/0.03=0.4x+0.9/0.5-x-5/2
0.4x+0.9/0.5-0.03+0.02x/0.03=x-5/2
0.4x+0.9/0.5-x-5/2=0.03+0.02x/3解方程
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
解不等式(0.4x-1)/0.5-(5-x)/2≤(0.03-0.02x)/0.03
0.4x+0.1/0.5-0.03+0.02x/0.03≤x-5/2 解这个不等式~
0.2x+0.5/0.5--0.03+0.12x/0.3=x-6/2
(0.5x+0.9)+3分之x-5=0.03分之0.01+0.02x
解方程:2- x+5/6=x- x-1/3,0.1-0.2x/0.03-1=0.7-x/0.4
3x+0.5x=4.2 4x-2.16=1.2 x-0.2x=16 2x-4x[这个x是乘】2.5=3.6 3x+5x=