Matematika Sekolah Dasar U3=24U6=361. U15-U10=...2. S20=...Tolong dijawab kak​

rafaelharrisulv – April 11, 2023

U3=24
U6=36

1. U15-U10=...
2. S20=...

Tolong dijawab kak​

Jawab:

U6 = a + 5b

U3 = a + 2b

<=> 36 = a + 5b

24 = a + 2b

<=> 12 = 3b

b = 12/3

b = 4

24 = a + 2b

24 = a + 2(4)

24 = a + 8

24/8 = a

a = 3

Nomor 1:

U15 = a + 14b

U15 = 3 + 14(4)

U15 = 3 + 56

U15 = 59

U10 = a + 9b

U10 = 3 + 9(4)

U10 = 3 + 36

U10 = 39

U15 - U10

= 59 - 39

= 20

Jawaban akhir: 20

Nomor 2:

U20 = a + 19b

U20 = 3 + 19(4)

U20 = 3 + 76

U20 = 79

S20 = 20/2 (a + U20)

S20 = 10(3 + 79)

S20 = 10 x 82

S20 = 820

Jawaban akhir: 820

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