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3a-2b = -3.........(2)
(1) x 2 dan (2) x 3
10a-6b = -8
9a-6b = -9
----------------- -
a = 1
masukkan ke (1)
5x1 - 3b = -4
5-3b = -4
-3b = -9
b = 3
himpunan penyelesaian
a=1 dan b=3