Question

ajudem pf!! 3x-1/3x=0

Answer 1

3x-(1/3x)=0  m.m.c.(1 , 3x)=3x
9x²-1=0
9x²=1
x²=1/9
x=√(1/9)
x=±1/3
x'=+1/3
x"=-1/3

S={+1/3 , -1/3}