Question

seven times a number exceeds the other number by 12 . if their sum is 72 find the number​

Answer 1

lets the number be X

1) X

2)(X*7)+12

3)X+(X*7)+12=72

X+7X=72-12

8X=60

X=60/8

answer of your question is :- 7.5

Answer 2

Answer:

ʟᴇᴛ ᴏɴᴇ ɴᴜᴍʙᴇʀ ʙᴇ x .

∴ ᴏᴛʜᴇʀ ɴᴜᴍʙᴇʀ = x - 12

ɴᴏᴡ , ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ Qᴜᴇꜱᴛɪᴏɴ

x + ( x - 12 ) = 72 ⇒ x + x - 12 = 72

⇒ 2x - 12 = 72

ᴛʀᴀɴꜱᴘᴏꜱɪɴɢ -12 ꜰʀᴏᴍ ᒪᕼՏ ᴛᴏ ᖇᕼՏ , ᴡᴇ ɢᴇᴛ

⇒ 2x = 72 + 12 ⇒ 2x = 84

ᴅɪᴠɪᴅɪɴɢ ʙᴏᴛʜ ꜱɪᴅᴇꜱ ʙʏ 2 , ᴡᴇ ɢᴇᴛ

⇒ 2x/2 = 84/2 ⇒ x = 42

∴ x - 12 = 42 - 12 = 30

ʜᴇɴᴄᴇ , ʀᴇQᴜɪʀᴇᴅ ɴᴜᴍʙᴇʀꜱ ᴀʀᴇ 42 ᴀɴᴅ 30 .