Tentukan himpunan penyelesaian 3|x-3|=9
tentukan himpunan penyelesaian 3|x-3|=9
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- x > 0
3 (x – 3) = 9
3x – 9 = 9
3x – 9 + 9 = 9 + 9
3x = 18
x = 18/3
x = 6
- x < 0
-3 (x – 3) = 9
-3x + 9 = 9
-3x + 9-9 = 9 – 9
-3x = 9 – 9
x = 0/(-3)
x = 0