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Umur tita adl X
Umur wina adl Y
Persamaannya :
2X + Y = 52 => dikali 2 => 4X + 2Y = 104
X + 2Y = 50 => dikali 1 => tetap
4X + 2Y = 104
X + 2Y = 50
______________-
3X = 54
X = 18
X + 2Y = 50
18 + 2Y = 50
2Y = 50 - 18
2Y = 32
Y = 16
Jadi,
Umur tita adl 18 thn
Umur wina adl 16 thn