the sum of 3 numbers is 301. the second number is 3 less than 12 times the first number. the third number is 4 more than 7 times the first number. find the 3 numbers

Answer 1

let the first be x
then the second is 12x-3
the third is 7x+4

now what else do you know about the three numbers.
Take it from here.

Answer 2

Anumber
is half of another number .the sum of 3 times of first number and 4 times of the other is 22.find the numbers