tentukan nilai x dan y

AB/AD = x+EC/x
10/6 = x+2 / x
10x = 6x+12
10x-6x = 12
2x = 12
x = 6

BC/y = AB/AD
10/y = 10/6
60 = 10y
y = 60/10
y = 6

Jadi,
x = 6
y = 6

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