Question

When 5 is subtracted from 2 times a number, 9 is obtained. Find the number.​

Answer 1

Answer:

∅ When 5 is subtracted from 2 times a number, 9 is obtained.

∅ Let the number be x :

⇒ 2x - 5 = 9

⇒ 2x = 9 + 5

⇒ 2x = 14

⇒ x = 14/2

⇒ x = 7

∅ Hence the number is 7.

∅ Verification :

⇒ 2x - 5 = 9

⇒ 2(7) - 5 = 9

⇒ 14 - 5 = 9

⇒ 9 = 9

⇒ L.H.S = R.H.S

Answer 2

$\underline{\sf\blue{ᴀɴꜱաɛʀ}}$

$\maltese$ Let the other number be x .

$\rightarrow$ 2x - 5 = 9

$\rightarrow$ 9 + 5 = 2x

$\rightarrow$ 14 = 2x

$\rightarrow$ x = 14/2

$\rightarrow$ x = 7

$\maltese$ Verification :

2x = 14

$\rightarrow$ 14 - 5 = 9

$\sf\red{LHS}\sf\green{=}\sf\blue{RHS}$

$\implies$ Hence Proved !