Kunci Jawaban Buku Paket Matematika Kelas 9 SMP MTs Halaman 225 Kurikulum 2013, Bab 4

6 x 7 = 5 x (6 + EB)

42 = 30 + 5EB

EB = (42 - 30) / 5

EB = 2,4 cm

Jadi, panjang EB adalah 2,4 cm.

b) 4/6 = 8 / (4 + CE)

4 x (4 + CE) = 6 x 8

16 + 4CE = 48

4CE = 48 - 16

CE = 32/4