Question

if x=a, if x is equal to A, Y is equal to b is the solution of the pair of equation x minus Y is equal to 2 and X + Y is equal to 4 find the value of a and b

Answer 1

x=3 , y=1 then x-y = 3-1=2. and x+y=3+1=4 hence x=a=3 and y=b=1