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1. 12 = 2² x 3
     18 = 2 x 3²
     30 = 2 x 3 x 5
     FPB = 2 x 3
     Jawaban B

2. 28 = 2² x 7
    36 = 2² x 3²
    48 = 2⁴ x 3
    FPB = 2² = 4
    Jawaban A

3. Soal tidak Selesai

1. 5.468 - 3.244 + 2.754 = 4.978
    Jawaban C

2. 24 x 5 : 6 = 120 : 6 = 20
    Jawaban C

3. 325 + 120 - (-273) = 325 + 120 + 273 = 718
    Jawaban D

4. 24 x 12 : (-8) = 24 x (-3/2) = -36
    Jawaban B

5. Suhu awal = -18°C
    kenaikan suhu = 2°C / 3 menit
    banyaknya kenaikan = 12 / 3 = 4 kali
    kenaikan suhu = 2°C x 4 = 8°C
    Suhu akhir =  -18°C + 8°C = -10°C
    Jawaban A