Metode subtitusi2x + 3y = 1x – y = -2tolong ya sekarang dikumpul​

▄︻̷̿┻̿═━一 ~♥~Ahmad B.A~♥~

Penyelesaian:

2x+3y = 1 …(1)

x-y = -2 …(2)

x = -2+y …(3)

substitusi pers 3 ke pers 1:

=> 2x+3y = 1

=> 2(-2+y)+3y = 1

=> -4+2y+3y = 1

=> 5y = 5

=> y = 1

substitusi nilai y ke pers 2:

=> x-y = -2

=> x-1 = -2

=> x = -1

jadi, nilai x = -1 dan y = 1 atau hp = {-1,1}