Question on: WAEC Mathematics - 2004
Given that x + y = 7 and 3x-y = 5, evaluate (\frac{y}{2}-3).
A
-1
B
1
C
3
D
4
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Correct Option: A
(x + y = 7 ------ I<br />
3x – y = 5 ------ II)
Add I and II;
(4x = 12 => x = \frac{12}{4} = 3<br />
Y = 7 – 3 = 4, evaluate \hspace{1mm} \frac{y}{2} – 3<br />
\frac{4}{2} – 3 => 2-3 = -1)
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