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3a + 2b = 16 |kalikan 2|
___________________-
- 7b = - 35
b = 5
a = 2
3a + 2b = 16 | x 2 | ⇒ 6a + 4b = 32 -
-7b = -35
b = 5
2a - b = -1
2a - 5 = -1
2a = 4
a = 2
Jadi, a = 2
b = 5