1.

27.The solution of the pair of equations x – y = 2 and x + y = 2 is:

Answer»

Answer:

X-y=2...(1)

x+y=4...(2)

Adding equation (1) and (2)..... it is because one SIGN is positive while other is negative.

On adding both the equations we GET,

x=3 and y=1

since x= p and y= Q we get

p+ q = 3+1

=4

p+q=4

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