Dik: 2x – 3y = -18
4x – y = -16
Maka,
Nilai 5x – y adalah …..?
TOLONG BANGET,DONGG :'(
Sistem persamaan linear dua variabel
Jawaban Terkonfirmasi
Y=4x+16
2x-3(4x+16)=-18
2x-12x-48=-18
2x-12x=30
-10x=30
x=-3
y=4(-3)+16=4
5(-3)-4= -15-4 = -19
2x-3y = -18 |×1|
4x-y = -16 |×3|
2x-3y = -18
12x-3y = -48
-10x = 30
x = -3
4x-y = -16
4(-3)-y = -16
-12-y = -16
-y = -16+12
-y = -4
y = 4
5x-y = 5(-3) – (4) = -15-4 = -19