Question

Find the value of the variable x in the equation 2x + 5 = 21 is​

Answer 1

Answer:

2x =21-5

x=17/2

Step-by-step explanation:

hope it is helpful

Answer 2

Given equation:

2x + 5 = 21

$\:$

Solution:

2x + 5 = 21

$\implies$ 2x = 21 - 5

$\implies$ 2x = 16

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

$\implies {\dag {\boxed {\bf {\orange {x = 8}}}}}$

$\:$

Verification:

Substitute the value of x as 8 in the equation,

2x + 5 = 21

$\implies$ 2×8 + 5 = 21

$\implies$ 16 + 5 = 21

$\implies$ 21 = 21

$\implies$ LHS = RHS

Hence Verified

$\:$

Value of x:

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