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himpunan penyelesaian dari 4x-y=20 dan 3x-y=10
Jawab
4x - y = 20
3x - y = 10
x = 10
4x - y = 20
4(10) - y = 20
40 - y = 20
-y = 20 - 40
-y = -20
y = 20
Himpunan penyelesaian (HP) = {10, 20}