Ifx=a , y=b is the solution of the pair of equation x-y =2 and x+y =4 , find value of a and b
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a-b=2 ...... eqn(1)
a+b=4......eqn(2)
adding both eqn
a+b+a-b=2+4
2a=6
a=3
putting value of a in eqn 1
3-b=2
3-2=b
b=1
a=3
b=1
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a-b = 2
a+b = 4
2a=6
a=3
b=1
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