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umur togar = y
x = y-4
x+y=24
x+y=24
(y-4)+y=24
2y-4=24
2y=24+4
2y=28
y=28/2
y=14
x+y=24
x+14=24
x=24-14
x=10
Jadi, umur vera adalah 10 tahun, sedangkan togar 14 tahun^^
Togar = x+4
(x/2x+4)*24
24x/2x+4=0
24x=2x+4
22x=4
x=2/11