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p + 21/21 = 24/18
18p + 378 = 504
18p = 504 - 378
18p = 126
p = 126/18
p = 7 Cm (A) ✔️
Teu - ba ~
Jawaban:
A. 7 cm
Penjelasan dengan langkah-langkah:
(p+21)/21 = 24/18
(p+21)/21 = 4/3
3(p+21) = 4×21
3p + 63 = 84
3p = 84-63
3p = 21
p = 21/3
p = 7 cm
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