Question

Carilah penyelesaian sistem persamaan
3x + 4y=-6 dan 2x - 3y = 13 dengan metode subtitusi....tolong dijawab ya..lagi perli

Answer 1

3x + 4y = -6
3x = -6 -4y
x = (-6 -4y)/3

2x - 3y = 13
2(-6 -4y)/3 - 3y = 13
--------------------------  dikalikan 3
2(-6 -4y) - 9y = 39
-12 - 8y - 9y = 39
-17y = 39 + 12
-17y = 51
y = -3

3x + 4y = -6
3x + 4(-3) = -6
3x - 12 = -6
3x = 6
x = 2

Answer 2

Semoga dapat membantu