解方程:x-1\3【x-1\3(x+9)】=1\9(x+9)(请用先去中括号的方程解)
问题描述:
解方程:x-1\3【x-1\3(x+9)】=1\9(x+9)(请用先去中括号的方程解)
答
x-1/3【x-1/3(x+9)】=1/9(x+9)
x-1/3x+1/9(x+9)】=1/9(x+9)
x-1/3x = 0
x = 0