Question

5x-7x=120
7x-5x=60
nilai x
jawaban yg salahatau asal aku hapus dan aku laporkan

Answer 1

A. 5x-7x=120
 -2x=120
x=-60

b.7x-5x=60
  2x=60
x=30

Answer 2

5x - 7x = 120
     -2x = 120
       x = 120/-2
       x = -60
7x - 5x = 60
     2x = 60
       x = 60/2
       x = 30
:)