Question

1440:[120-(3*x+9)]=120 ai giup em vs

Answer 1

120-(3*x+9)=12

      3*x+9=108

     3*x=117

        x=39

chúc em học giỏi

Answer 2

em cam on a

Answer 3

ko có chi

Answer 4

1440:[120-(3\(\times x\)+9)]=120

120-(3\(\times x\)+9)=1440:120

120-(3\(\times x+9\))=12

3\(\times x+9\)=120-12

3\(\times x+9\)=108

x+9=108:3

x+9=36

x=36-9

x=27