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3x - 2x = 15 - 6
x = 9
b) 5x + 4 = 9
5x = 9 - 4
x = 5/5 = 1
c) soal kurang jelas
d) 5x - 3 ≤ 3x + 7
5x - 3x ≤ 7 + 3
2x ≤ 10
x ≤ 10/2
x ≤ 5
5× =9+4
5× =13
× =13
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5
maaf kalau salah