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Verified answer
(x + x+2 + x+4 + 2x-3) : 4 = 16x + x + x + 2x + 2 + 4 - 3 = 16 x 4
5x + 3 = 64
5x = 64 - 3
5x = 61
x = 61 / 5
x = 12,2 tahun
Verified answer
X4 = xx1,x2,x3 = x+2 , x+4 , 2x-3
((x+2)+(x+4)+(2x-3)+x)/4 =16
( 5x+ 3 )/4= 16
5x+3 = 64
5x =61
x=61/5 = 12,2 tahun