Jawaban:
17. 30 - ((20+15) - 10) = 30 - (35-10) = 30 - 25 = 5 (c)
18. (20+15) - (25-3) = 35 - 22 = 13
tidak ada jawaban yang tepat
19. ((20+15) - 5) + 3 = (35-5) + 3 = 30 + 3 = 33 (d)
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Jawaban:
17. 30 - ((20+15) - 10) = 30 - (35-10) = 30 - 25 = 5 (c)
18. (20+15) - (25-3) = 35 - 22 = 13
tidak ada jawaban yang tepat
19. ((20+15) - 5) + 3 = (35-5) + 3 = 30 + 3 = 33 (d)