Question

dikasih cara ya. makasih.

Answer 1

2(x-4) = 5(1-y)
⇒2x - 8 = 5 - 5y
⇒2x + 5y = 13   .....(1)
13x + 3y + 4 = 0
⇒13x + 3y = -4 ......(2)

(1) × 3 : 6x + 15y = 39       .....(1)'
(2) × 5 : 65x + 15y = -20    .....(2)'
             _____________-
             59x = 59
                 x = 1

Substitusikan nilai x ke (1)!

2 + 5y = 13
5y = 13 - 2
5y = 11            1
y = 2,2 atau 2 ---
                        5
                                          1
Jadi, x = 1, y = 2,2 atau 2 ---
                                          5

Semoga membantu :)