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Langkah 1. cari nilai XLangkah 2. cari nilai Y ( di foto Y sy ganti menjadi A dikarenakan hampir sama seperti 4)
semoga membantu....
1/3 = 6/(6 + x)
18 = 6 + x
x = 12 cm
6/18 = y/(y + 4)
1/3 = y/(y + 4)
3y = y + 4
y = 4 : 2
y = 2 cm