Question

solve x+y=4 ,x-y=1 find the value of x and y

Answer 1

subtract both equations,

x + y =4
x - y = 1
-----------
2y = 3
----------

y = 3/2

y value in 1 we get,

x + 3/2 = 4
2x + 3 = 8
2x = 5

x = 5/2


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Answer 2

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