Question

If a Number is multiplied by 7 and decreased by 1, the result is 20.Find the number​

Answer 1

Answer:

Gɪᴠᴇɴ :- Iғ ᴍᴜʟᴛɪᴘʟɪᴇᴅ ʙʏ 7 ᴀɴᴅ sᴜʙʀᴀᴄᴛɪɴɢ 1 = 20

ʟᴇᴛ ᴛʜᴇ ɴᴜᴍʙᴇʀ ʙᴇ " x "

$\implies$ x × 7 - 1 = 20

$\implies$ 7x - 1 = 20

$\implies$ 7x = 20 + 1

$\implies$ 7x = 21

$\implies$ x = $\dfrac{21}{7 }$

$\implies$ x = $\boxed{\sf{3}}$

Tʜᴇʀᴇғᴏʀᴇ, ᴛʜᴀᴛ ɴᴜᴍʙᴇʀ ɪs 3 :)

Answer 2

Answer:

Iғ ᴍᴜʟᴛɪᴘʟɪᴇᴅ ʙʏ 7 ᴀɴᴅ sᴜʙʀᴀᴄᴛɪɴɢ 1 = 20

ʟᴇᴛ ᴛʜᴇ ɴᴜᴍʙᴇʀ ʙᴇ " x "

\implies⟹ x × 7 - 1 = 20

\implies⟹ 7x - 1 = 20

\implies⟹ 7x = 20 + 1

\implies⟹ 7x = 21

\implies⟹ x = \dfrac{21}{7 }

7

21

\implies⟹ x = \boxed{\sf{3}}

3

Tʜᴇʀᴇғᴏʀᴇ, ᴛʜᴀᴛ ɴᴜᴍʙᴇʀ ɪs 3

Step-by-step explanation:

hope you understand my friend :)