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Question
If x + y = 5 and x - y = 1, then find the value of x.
Solution
x = 5 - y -(i)
y = x - 1 -(ii)
Now put the value of eq(ii) into eq(i)
x = 5 - (x - 1)
x = 5 - x + 1
x = 6 - x
2x = 6
x = 3
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