Matematika Sekolah Menengah Pertama jangan ngasal poinnya banyak nih
# no ngasal
# no ngambil poin
# no bahasa alien
jangan ngasal poinnya banyak nih # no ngasal # no ngambil poin # no bahasa alien Jawab: perbandingan 15) sisi pendek = 9/4 x 3 = 6,75 cm 16) 6a + b = 6(3) + 4 = 22 4a + 5b = 4(3) + 5(4)= 32 22 : 32 = 11 ; 16 17. drama = 7/12 x 72 = 42 misteri = 5/12 x 72 = 30 banyak buku misteri = 42 - 30 = 12 18. a + b = 1 a - b = 5__(+) 2a = 6 a= 3 a + b = 1 3 + b = 1 b = -2 a² - b² : a² + b² = (9- 4) ; (9 + 4) = 5 : 13 19. skala 2 cm : 80 km = 2 : 8.000.000 = 1 : 4.000.000 20. p= 7 x 21 / 49 p = 21/7 p = 3 Jawaban: 9/4 × 3 (9 ÷ 4) × 3 6 , 7 5 c m 6(3) + 4 = 22 4(3) + 5(4) = 32 22 : 32 = 1 1 : 1 6 7/12 × 72 (7 ÷ 12) × 72 4 2 5/2 × 72 = (5 ÷ 2) × 72 = 30 42 - 30 = 1 2 2a = 6 a = 6/2 a = 3 3 + b = - 1 b = - 2 (9 - 4) : (9 + 4) 5 : 1 3 2 : 80 2 : 8.000.000 2 ÷ 2 : 8.000.000 ÷ 2 1 : 4.000.000 7 × 21/9 21 ÷ 7 3
