Question

解方程2[4/3x-(2/3x-1/2)]=3/4x x+4/0.2-x-3/0.5=-1.6

那个3/4和x+4中间分开，要过程

Answer 1

2[4/3x-(2/3x-1/2)]=3/4x
8/3x-4/3x+1=3/4x
1=8/3x-4/3x-4/3x
1=0
矛盾方程，无解
x+4/0.2-x-3/0.5=-1.6
x+20-x-6=-1.6
14=-1.6
矛盾方程，无解

Answer 2

2[4/3x-(2/3x-1/2)]=3/4x
4/3x-(2/3x-1/2)=3/8x
2/3x+1/2=3/8x
2/3x-3/8x =-1/2
10/24x =-1/2
x =-1/2*24/10=-6/5

(x+4)/0.2-(x-3)/0.5=-1.6

5(X+4)-2(x-3)=-16
3X+26=-16
X=-14