Question

giúp e vs ạ

Answer 1

a: ĐKXĐ: -2x+3>=0

=>-2x>=-3

=>x<=3/2

b: ĐKXĐ: -x-4>=0

=>-x>=4

=>x<=-4

c: ĐKXĐ: 1/3x+1>=0

=>1/3x>=-1

=>x>=-3