G. 3x – 4y = 30
2x + 3y + 14 = 0
H. 2x + 4y = 1
X + y = 1
I. 5x + y = 6
2x + 3y = 5
J. 3x + 5y = 15
9× + 15y = 45
Tlg bntu jwbyaaaa
Tentulan himpunan penyelesaian sistem persamaan berikut dengan metode substitusi.
G.3x – 4y =30. x2. subsititusi y =2x + 3y=14
2x + 3y=14. x3. 2x + 3(6)=14
____________ 2x + 18=14
6x – 8y = 60. 2x=14-18
6x + 9y = 42. 2x=-4
_______________ +. x=-4:2=-3
17y. =102
y =102:17.
y. = 6