tolong dibantu yaaa :))))

jawab :

mobil sedan = x
mobil besar = y

persamaan linear :
4x + 20y = 352
x + y = 20

Samakan nilai x :
4x + 20y = 352 → pers 1.....
x + y = 20 |×4| → 4x + 4y = 80 → pers 2....

• metode eliminasi ....
4x+20y = 352
4x+4y = 80
____________ _
16y = 272
y = 272/16
y = 17

• mencari nilai y :
x + y = 20
17 + y = 20
y = 3

jadi,
y(15.000) = 17(15.000) = 255.000
x(4.000) = 3(4000) = 12.000
_________________________ +
pendapatan per hari = Rp 267.000

semoga membantu ya........