Tentukan himpunan penyelesaian : (linear variabel) 2x-3y/4 = 3x-2y/5 = 7 1/2

2x – 3x = 3y/4 + (-2y/5) =7/12
-x = 5(3y + 4) + 4(-2y + 5)
-x= 15y + 20 + -8y + 20
-x = 7y + 40