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Verified answer
Menentukan Nilai x dan ySoal
3x + y = 9
5x + 2y = 16
Nilai x + y = ...
Penyelesaian
3x + y = 9 | × 2
5x + 2y = 16 | × 1
__________ -
6x + 2y = 18
5x + 2y = 16
__________ -
x = 2
3x + y = 9
3(2) + y = 9
6 + y = 9
y = 9 - 6
y = 3
Maka Nilai x + y = 2 + 3 = 5 (C)