sistem persamaan y-2x=-1 dan 3y=2x+5 metode subtitusi

y - 2x = -1
y = 2x - 1

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

Substitusi
2x - 3(2x - 1) = 5
2x - 3x + 3 = 5
-x = 5 - 3
x = -2

y = 2x - 1
y = 2(-2) - 1
y = -4 - 1
y = -5