10x + 12y = 20900 (dibagi 2 semua)
6x +5y = 11000
x + y = ?
5x + 6y = 10450
30x + 36y = 62700
30x + 25y = 55000
________________ -
11y = 7700
y = 700
6x + 5 (700) = 11000
6x + 3500 = 11000
x = 11000 - 3500/6
= 1250
Jadi nilai x + y adalah 1250 + 700 = 1950 (A)
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10x + 12y = 20900 (dibagi 2 semua)
6x +5y = 11000
x + y = ?
5x + 6y = 10450
30x + 36y = 62700
30x + 25y = 55000
________________ -
11y = 7700
y = 700
6x + 5 (700) = 11000
6x + 3500 = 11000
x = 11000 - 3500/6
= 1250
Jadi nilai x + y adalah 1250 + 700 = 1950 (A)