September 2018 1 111 Report
Panjang sisi-sisi suatu segitiga diketahui berturut-turut (2a-1) cm, (20-a) cm, dan (3a-5) cm. keliling segitiga tersebut ....cm

(tolong berikan cara pengerjaannya)

a. 4a + 14
b. 4a + 16
c. 6a + 14
d. 6a + 24
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