October 2019 2 11 Report
Rumus suku ke n dari suatu barisab aritmetika adalah...
a.un= a+ (n-1) b
b.un=2a+ (n-1) b
c.un=a+(n-1) 2b
d.un =2a + (n-1) 2b
tolong jawab berserta cara penting hari ini​
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