3x + 5y=15 4x + 2y=13 tentukan subsitusi yaa

3x +5y = 15
4x + 2y = 13

2y = 13-4x
y = 13-4x / 2

3x+5y = 15
3x+5(13-4x / 2) = 15
3x+(65-20x / 2) = 15
6x/2 -20x+65 /2 = 15
-14x+65 = 30
-14x = 30-65
-14x = -35
x = 35/14

3x+5y=15
3(35/14)+5y=15
105/14+5y=15
5y = 15 - 105/14
5y = 210/14 - 105/14
5y = 105/14
y = 105/70
y = 21/14

semoga bisa membantu!! terima kasih!!