Tolong sya 2x-5y=14 dan x+4y=6

Mapel : Matematika
Kelas : VIII SMP
Materi : SPLDV

Pembahasan :
2x - 5y = 14
2x + 8y = 12
———————— (-)
13y = -2
y = -2/13

Substitusi...
x + 4y = 6
x + 4(-2/13) = 6
x - 8/13 = 6
x = 6 + 8/13
x = 78/13 + 8/13
x = 86/13

Hp : {86/13 , -2/13}

x + 4y = 6 ... Kali 2
2x + 8y = 12

2x + 8y = 12
2x - 5y = 14
Kurangkan
13y = -2
y = -2/13

x = 6 - 4y
x = 6 + 8/13
x = 86/13

HP = {(86/13 , -2/13}