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Kelas 7 MatematikaBab Perbandingan dan Aritmatika Sosial
(x - 3)/5 - x/2 < 3
◎◎ dikali 10 ◎◎
2 (x - 3) - 5x < 30
2x - 6 - 5x < 30
-3x < 30 + 6
x > -36/-3
x > 12