Soal Pretest PPG Matematika Terbaru Tahun 2022, Lengkap dengan Jawaban dan Pembahasan Sesuai FR

y – 2/7y = f + 2/7y

5/7y = f + 2/7y

f = 5/7y – 2/7y = 3/7y

y – f = 120.000

y – 3/7y = 120.000

4/7y = 120.000

y = 7/4 x 120.000 = 210.000

f = 3/7y

f = 3/7 x 210.000 = 90.000

y + f = Rp210.000 + Rp90.000 = Rp300.000