Answer:A
{(5/7, 12/7)}
Explanation:
5x+2y=7
y=x+1
5x+2(x+1) =7
5x +2x+2=7
7x +2 =7
7x = 5
x = 5/7
y=5/7 +1
y =12/7
(5/7, 12/7)
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