Question

If x= a and y= b is solution for the pair of equations x-y=2 and x+y=4,then find the values of A and B

Answer 1

$x - y = 2 \\ and \: x + y = 4 \\ so \: by \: using \: elemination \: method \: we \: \\ will \: get \: x = 3and \: y = 1soa = 3 \: and \\ \: b = 1$

Answer 2

Just simply add the equations. So u will get 2x=6 so x=3 and putting it any equation u can find out the value of y