Kunci Jawaban Matematika Kelas 7 Halaman 25, Tabel 1.2 Pengecekan Sifat Komutatif dan Asosiatif

a × b = –2 × 6 = –12
b × a = 6 × (–2) = –12
(a × b) × c = (–2 × 6) × (–3) = (–12) × (–3) = 36

b × c = 6 × (–3) = –18
a × (b × c) = –2 × (6 × (–3)) = –2 × (–18) = 36

Jawaban Soal no. 3 ⇒ a = 3, b = –7 dan c = 2

a × b = 3 × (–7) = –21
b × a = –7 × 3 = –21
(a × b) × c = (3 × (–7)) × 2 = –21 × 2 = –42

b × c = –7 × 2 = –14
a × (b × c) = 3 × (–7 × 2) = 3 × (–14) = –42

Baca Juga: Kunci Jawaban Matematika Kelas 7 Halaman 10 Semester 1, Cara Menghitung Bilangan Terbesar Secara Benar

Jawaban Soal no. 4 ⇒ a = –4, b = –8 dan c = –1

a × b = –4 × (–8) = 32
b × a = –8 × (–4) = 32
(a × b) × c = (–4 × (–8)) × (–1) = 32 × (–1) = –32

b × c = –8 × (–1) = 8
a × (b × c) = –4 × (–8 × (–1)) = –4 × 8 = –32

Jawaban Soal no. 5 ⇒ misal kita pilih a = –3, b = –2 dan c = 5