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Verified answer
Mapel : MatematikaKelas : VIII SMP
Materi : SPLDV
Pembahasan :
3x + 4y = 12
2x + 6y = 6 —» 3x + 9y = 9
Substitusi...
3x = 3x
12 - 4y = 9 - 9y
-4y + 9y = 9 - 12
5y = -3
y = -3/5
Substitusi...
x + 3y = 3
x + 3(-3/5) = 3
x - 9/5 = 3
x = 3 + 9/5
x = 15/5 + 9/5
x = 24/5
Hp : {24/5 , -3/5}
2x+6y =6 |x3| 6x+18y = 18
- 10y = 6
y = -10/6 :2
= -5/3
semoga membantu:)