Question

The sum of two numbers is 28 and their difference is 4.

Answer 1

Answer:

16 and 12

Step-by-step explanation:

This is a system of linear equations:

x +y = 28

x − y = 4

Add to get rid of y:

2x = 32

x = 16

Plug back in to solve for y

16 +y = 28

y = 12

The answer is (16,12)

Answer 2

Answer:

a = 16

b = 12

Step-by-step explanation:

let, a and b the two numbers,,

Now, A/C to the given condition!!

a + b = 28 --(i)

a - b = 4 ----(ii)

eq (i) :

a + b = 28

a = 28 - b ---(iii)

Put above value in eq (ii)

28 - b - b = 4

28 - 2b = 4

- 2b = 4 - 28

- 2b = - 24

b = -24 / -2

b = 12

Put "b" value in eq (iii)

a = 28 - 12

a = 16

Hope you get your answer!!

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