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5p - 7 = 3p + 13
5p - 3p = 13 + 7
2p = 20
p = 20 : 2
p = 10 cm
b) panjang diagonal = 5p - 7
= 5(10) - 7
= 50 - 7
= 43 cm
Jadi, panjang diagonal persegi tersebut adalah 43 cm.
5p - 7 = 3p + 13
5p - 3p = 13 + 7
2p = 20
p = 20:2
p = 10 cm
b. Panjang diagonal
3p + 13
= (3x10) + 13
= 43 cm
*jadikan jawaban terbaik ya