selesaikan persamaan berikut dengan metode subtitusi : -2x+3y = 7 5x+8y = -2

- 2x + 3y = 7
5x + 8y = - 2

- 2x + 3y = 7
3y = 7 + 2x
y = 7/3 + ⅔x

5x + 8y = - 2
5x + 8(7/3 + ⅔x) = - 2
5x + 56/3 + 16/3x = - 2
15x + 56 + 16x = - 6
15x + 16x = - 6 - 56
31x = - 62
x = - 2

y = 7/3 + ⅔x
y = 7/3 - 4/3
y = 1

Maaf Kalau Salah