Kunci Jawaban Matematika Kelas 7 Halaman 58, 59 Semester 2, Soal Uraian No 1-5 Persentase Akses Air Minum

Baca Juga: Kunci Jawaban Tema 6 Kelas 1 SD MI Halaman 124, 125 Subtema 4, Percakapan Beni dan Ayahnya

Jawaban:

a : b = 3 : 4

a/b = 3/4

a = 3/4

(a + 2)/(b + 2) = 7.9

9 (a + 2) = 7 (b + 2)

9 (3/4b + 2) = 7 (b + 2)

27/4b + 18 = 7b +14

18 – 14 = 7b – 6 3/4