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Pak Yahya = x
Adi = y
x = 3y
x = 22 + y
x = x
3y = 22 + y
3y - y = 22
2y = 22
y = 11
jadi, umur adi = 11 tahun
2x = 22
x = 22 : 2
x = 11 th
nb=
3x itu umur pak yahya
x itu umur adi
perbandingan 3 : 1