Question

if x= a, y=b is yhe solution of the pair of equations x-y =2 and x+y =4 find the value of a and b

Answer 1

a-b=2 eq.1
a+b=4 eq.2
adding eq.1 and eq.2
2a=6
a=3. EQ.3
putting a in 1st
3-b=2
b=1