April 2019 0 23 Report
Ciąg arytmetyczny . Proszę o pomoc.
a ) a5 = 8 , a7=14 , a10= ?

b) a11 = 30 , a15 =42, a20=?

c) a5=12 , a8=18 a12=?

d) a5=18 , a6=21 a3=?

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