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A + S = 27
substitusi
A + S = 27
3 + S + S = 27
2S = 27 - 3
2S = 24
S = 12
A = 3 + S
A = 3 + 12
A = 15
Jadi, umur Aldo 15 tanhun dan umur Satya 12 tahun.
semoga membantu ya :)
S = 27 - 3
= 24
=
= 12
A = 12 + 3
= 15