Question

The
Sum of two numbers is 16 and the difference
between them is 4,
find the numbers.​

Answer 1

Step-by-step explanation:

suppose one number is a.

and other is b.

sum of them is a+b=16

and difference is a-b=4

a+b=16

-a-b=4

+ -

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

2b=12

b=12/2

b=6

now put value of b in a+b=16

a+6=16

a=16-6

a=10

Answer 2

Step-by-step explanation:

by using the formula

Sn= n/2[2a+(n- 1 ) d]