Kunci Jawaban Matematika Kelas 9 Halaman 238-241 Semester 2 Latihan 4.3 Kekongruenan No 6-10

a. 40 cm - 3cm - a

37 cm - a

50 cm (5cm + 5cm)

40 cm

37 -a / 40 = 40/50

37 - a = 4/5.40

5 (37 - a) = 160

185 - 5a = 160

185 - 160 = 5a

25 = 5a