b)13.(x+67)=0
c)(x-2).2=4
d)(x+47)-170=0
e)5x-12=48
f)400-(y-218)=0
g)y-10=2y-5
h)(x-3)÷3=27
i)81÷(x+5)=9
k)(x-3).(x+4)=0
Loga
Sinh Học lớp 12
