Question

a+b=25 a-b=15 then a and b are​

Answer 1

Answer:

add both equation

so b gets cancelled

2a =40

a=20

b=25-20=5

Answer 2

Answer:

a+b=25-----------(1)

a-b=15-------------(2)

substracting (2) from (1):

a+b= 25

-a+b= -15

----------------

2b = 10

b = 5

now using this value in (1)

a + 5 = 25

a = 25-5

a = 20