4x + 20 = 3x

4x - 3x = -20

x = -20

(2) 0,25x = 0,2x - 0,1

0,25x = 0,2x - 0,1

0,25x x 100 = (0,2x - 0,1) x 100

25x = 20x - 10

25x - 20x = -10

5x = -10

x = -2

• Kunci Jawaban Kurikulum Merdeka Matematika Kelas 7 SMP Halaman 101 Skala dan Rasio Ekuivalen

Soal nomor 6

Selesaikanlah

(1) 1/2x = 2/5x - 1

(2) 2/3x - 1/2 = 5/6x + 2

(3) x - 3 / 2 = -4