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vera = x - 4
togar = x
24 = x + x - 4
24 = 2x - 4
24 + 4 = 2x - 4+4
28 = 2x
x = 28/2
x = 14
togar = x = 14 th
vera = x - 4 = 14-4 = 1o th
nomor 2
x + x + 2 + x + 4 = 108
3x + 6 = 108
3x + 6 - 6 = 108-6
3x = 102
x = 102/3
x = 34
U1 = x = 34
U2 = x + 2 = 34 + 2 = 36
U3 = x + 4 = 34 + 4 = 38
togar = y
x= y-4
x+y= 24.
y-4+y=24
2y-4=24
2y=24+4
2y=28
y=28/2
y=14
x=y-4
x= 14-4
x=10 jadi, umur vera = 10, dan umur togar = 14