Question

2x+5=21, find the value of x in the question​

Answer 1

Answer:

Value of variable x in the equation 2x + 5 = 21 is 8

Answer 2

Answer :

• x = 8

Given :

• 2x + 5=21

To find :

• the value of x in 2x + 5=21

Solution :

⇒ Let's find the value of x in the following equation.

$\sf \to 2x + 5 = 21$

$\sf \to 2x = 21 - 5$

$\sf \to 2x = 16$

$\sf \to x =\dfrac{16}{2}$

$\sf \to x = \cancel {\dfrac{16}{2} }$

$\sf \to x = 8$

$\therefore \bf x = 8$

• Therefore, the value of x is 8.

Let's verify!

• LHS = 2x + 5 = 21 and RHS = 21.

→ 2x + 5 = 21

→ (2 × 8) + 5 = 21

→ 16 + 5 = 21

→ 21 = 21

• Therefore, LHS = RHS.