cara distribusi himpunan penyelesaian persamaan x + 18 y = -120 30 x + 3y = 50

x + 18y = -120
x = -120 - 18y
x = -120 - 18y, y€R


30x + 3y = 50
30x = 50 - 3y
x = 50/30 - 3/30 y
x = 5/3 - 1/10 y
x = 5/3 - 1/10 y, y€R