解方程1/2[x-1/2(x-1)]=2/3用去括号发解
问题描述:
解方程1/2[x-1/2(x-1)]=2/3用去括号发解
答
1/2[x-1/2(x-1)]=2/3
1/2x-1/4(x-1)=2/3
1/2x-1/4x+1/4=2/3
1/4x=2/3-1/4
1/4x=5/12
x=5/3