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2j + 3a = 45000 |x2| 4j + 6a = 90000
____________________-
11j = 66000
j = 6000
2j + 3a = 45000
2(6000) + 3a = 45000
3a = 45000-12000
a = 33000/3 = 11000
2x + 3y : 45.000 ⇒ x2 (eliminasi)
5x + 2y : 52.000 ⇒ x3 (eliminasi)
= 4x + 6y : 90.000
15x + 6y : 156. 000 -
-11x + 0 : -66.000 ⇒ 66.000 : 11 = 6000
x : 6000.
y : 2 x 6000 + 3y = 45.000
45.000 - 12.000 = 33.000.
33. 000 : 3 = 11.000
y : 11. 000
harga sekilo jeruk : 6000
harga sekilo apel : 11.000