Tolong jawab pake cara no. 2-5 pake cara ya butuh banget soalnya

2) 7√7 × √14
= 7√98
= 7√(49 × 2)
= 7 × 7√2
= 49√2 ( C )

3) 3⅔ + 1 3/7 : 2 1/7
= 11/3 + ( 10/7 : 15/7)
= 11/3 + ( 10/7 × 7/15)
= 11/3 + 2/3
= 13/3 ( D )

4) jumlah perbandingan = 5 + 7 = 12
jumlah kelereng = 48
selisih perbandingan = 7 - 5 = 2
selisih kelereng
= 2/12 × 48
= 1/6 × 48
= 8 ( A )

5) bunga 6 bln
= 9/12 × 12%
= 9%
misal bunga + tab awal
= 100% + 9%
= 109%
tab awal
= 100%/109% × 3.815.000
= 3.500.000 ( A )