Question

If a+b=7 and a-b23
than value of
어
b is = ?
(
ca)
(b) 9
(C16 (d)-3
it is urgent plz answer it​

Answer 1

Answer:

Given:

• a + b = 7
• a - b = 3

Find:

• Value of b?

Solution:

➙ a + b = 7 ____(1)

➙ a - b = 3 _____(2)

From equation (1) and (2) :-

: ➙ a + b + a - b = 7 + 3

: ➙ a + a = 10

: ➙ 2a = 10

: ➙ a = 5

Now substitute a value in equation (1) :

a + b = 7

5 + b = 7

b = 7 - 5

b = 2

${ \therefore{ \sf{value \: of \: b \: is \: 2}}}$

Therefore,

• Option A is your answer