1).Umur andra 17thn 9 bulan umur kakenya 4 kali umur andra 2).-25:5+35 (-5) - (-15) = 3). 2 (4+30) × (15 - 5) = 4). 66 - 2 × (13 - 6) + 36 = MohonBantuannya. C

1) 17 thn = 204 bln + 9 bln = 213 bln × 4 = 852
852 ÷ 12 = 71 (umur kakek)
2) -25÷5+35 (-5) - 5
=5 + 35 (-5) -5
=40 × 0
=0
3) 2 (4+30) × (15 - 5)
=2 (34) × (10)
=2 (340)
=680
4) 66-2 × (13-6) + 36
=64 × 7 + 36
=448 + 36
=484
Maaf kalau salah
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