Contoh Soal dan Kunci Jawaban Matematika Kelas 10 SMA MA, Barisan dan Deret Part 4

d.55

e.60

Jawaban: c

b = 4x + 1 – 2x

b = 2x + 1

b = 14 – 4x + 1

b = 13 – 4x

2x + 1 = 13 – 4x

2x + 4x = 13 – 1

6x = 12