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Verified answer
Mapel : MatematikaBab : Sistem Persamaan Linear Dua Variabel
Diketahui :
- Usia Asti = a
- Usia Arif = b
- a = b + 10
- a - 6 = 2(b - 6)
Ditanya :
- Usia Arif = ....?
Penyelesaian :
- Usia Asti :
a = b + 10
b = a - 10
a - 6 = 2(b - 6)
a - 6 = 2(a - 10 - 6)
a - 6 = 2(a - 16)
a - 6 = 2a - 32
a - 2a = - 32 + 6
- a = - 26
a = 26
Usia Asti = 26 Tahun
- Usia Arif :
b = a - 10
b = 26 - 10
b = 16
Usia Arif = 16 Tahun
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