U3=7 dan u11=23 tentukan u20
Matematika
Bebyhaliza12345
Pertanyaan
U3=7 dan u11=23 tentukan u20
1 Jawaban
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1. Jawaban violincantika
U3 = a + 2b = 7
U11 = a + 10b = 23
_________________ -
-8b = -16
b = 2
a + 2b = 7
a + 4 = 7
a = 7 - 4
a = 3
U20 = a + 19b
U20 = 3 + 19(2)
= 3 + 38
= 41