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29 = 4x + 1
29 - 1 = 4x
28 = 4x
x = 28 / 4 = 7
Maka sisinya :
x+3 = 7+3 = 10 cm
3x-4 = 3.7 - 4 = 21 - 4 = 17 cm ---> terpanjang
2 cm ---> terpendek
Jadi jumlahnya = 17 + 2 = 19 cm
Jadi jumlah sisi terpanjang dan terpendek adalah 19 cm