Question

Q. If x = a and y = b is the solution of the equations x + y = 5 and x - y = 7 , theb the value of a and b are

a) 1 and 4
b) 6 and -1
c) -6 and 1
d) -1 and -6

With explanations please..​

Answer 1

Answer:

b

you can just check it by option verification

Answer 2

Answer:

x is a. and y is b. so..

a+b=5

a-b=7

so then we will cut +b and -b

so,2à=12

a=6

and then b =-1 when you will put the value of a in the equation