September 2018 1 25 Report
Diketahui 3 bilangan a,b,c. Nilai rata-rata 3 bilangan itu adalah 9. Jika nilai rata-rata d dan e adalah 14,nilai rata-rata 5 bilangan a,b,c,d,dan e adalah...
a.8
b.9
c.10
d.11

BUTUH BANGET...!!tolong bantu yah ..rumus dan cara.. MAKASIH..
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