Question

Mohan is 3 years older than Subhan the sum of their ages is 43 years form an equation

Answer 1

let the age of mohan be 'x' yrs.
let the age of subhan be 'y' yrs.
A.T.Q.
x=3y
x-3y=43
this is ur req. eq.

Answer 2

ʜᴇy ᴜꜱᴇʀ

ʜᴇʀᴇ ɪꜱ yᴏᴜʀ ᴀɴꜱᴡᴇʀ :-

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ʟᴇᴛ ᴛʜᴇ ᴩʀᴇꜱᴇɴᴛ ᴀɢᴇ ᴏꜰ ꜱᴜʙʜᴀᴍ ʙᴇ " x yᴇᴀʀꜱ "

ꜱᴏ ᴩʀᴇꜱᴇɴᴛ ᴀɢᴇ ᴏꜰ ᴍᴏʜᴀɴ ᴡɪʟʟ => ( x + 3 ) yᴇᴀʀꜱ

ʙy ᴛʜᴇ ɢɪᴠᴇɴ ᴄᴏɴᴅɪᴛɪᴏɴ ,

x + x + 3 = 43

2x + 3 = 43 .