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  • If x = a, y = b is the solution of the pair of equations x – y = 2 and x + y = 4, find the values of a and b.     

If x = a, y = b is the solution of the pair of equations x – y = 2 and x + y = 4, find the values of a and b. 

 

 

Answers (1)

Given x = a , y = b 

 equations are 

x-y = 2 ----(1)\\\\ x+y = 4 ----(2) \\\\

By adding (1) and (2), we get 

 2x = 6 \\\\ x = 3 \\\\ x = a \\\\ \therefore a = 3

BY eq (2) 

3+ y = 4 \\\\ y = 1 \\\\ \therefore y = b \\\\ \therefore b = 1 \\\\ a = 3 , b = 1

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Safeer PP

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