Tentukan himpunan penyelesaian dari persamaan berikut!!!
Jawaban
1). 4x - 8 = 9
4x - 8 = 9
4x = 9 + 8
x = 17/4 = 4,25
2). 5x - 7 = 12
5x - 7 = 12
5x = 12 + 7
x = 19/5 = 3,8
3). 12x - 2 = -5
12x - 2 = -5
12x = -5 + 2
x = -3/12 = -0,25
4). -x + 2 = 15
-x + 2 = 15
-x = 15 - 2
-x = 13
x = -13
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