Question

If x=a, y=b is the solution of the pair of equation x-y=2 and x+y=4 then what will be value of a and b ni​

Answer 1

Answer:

a-b=2and a+b=4

value of and b is 2a-b and 2a+b

Answer 2

Answer:

x-y=2

a-b=2 equation 1

x+y=4

a+b=4 equation 2

by equation I and 2

x-y=2

x+y=4

2x=6

x=6/2

x=3

So, a = 3

putting a=3 in equation 1

x-y=2

3-y=2

y= 2+3

y=5

so, b=5