nilai X dan Y yang memenuhi SPLDV 3x + y = 7 dan -4y = 14 PAKAI CARANYA YA

[tex] - 4y = 14 \\ < = > y = - \frac{14}{4} \\ < = > y = - \frac{7}{2} \\ \\ 3x + y = 7 \\ 3x + ( - \frac{7}{2} ) = 7 \\ < = > 3x = 7 + \frac{7}{2} \\ < = > 3x = \frac{21}{2} \\ < = > x = \frac{21}{2} \times \frac{1}{3} \\ < = > x = \frac{7}{2} [/tex]
Semoga membantu.