Diketahui sistem persamaan (7x-y=6 (3x+2y=5 maka nilai x + y adalah....

7x - y = 6
3x + 2y = 5
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14x - 2y = 12
3x + 2y = 5
_________ +
17x = 17
x = 1

7x - y = 6
7(1) - y = 6
7 - y = 6
y = 1

Nilai x + y
= x + y
= 1 + 1
= 2

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#Semoga bermanfaat ^_^