TOLONG BANTU JAWAB PAKAI CARA #NO NGASAL NGASAL
Jawaban:
19. (3 2/5 - 0,7) ÷ 9/20 = (17/5 - 7/10) ÷ 9/20
= (34/10 - 7/10) ÷ 9/20 = 27/10 ÷ 9/20
= 27/10 × 20/9 = 3/1 × 2/1 = 5/1 = 5 gelas
20.
(203 - (10,5 × 6)) - ((203 - (10,5 × 6)) × 3/7)
= (203 - 63) - ((203 - 63) × 3/7)
= 140 - (140 × 3/7)
= 140 - (20 × 3/1)
= 140 - 60 = 80 m²
Terimakasih:)
Semoga Membantu:D
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