Answer:
7 and 21 or - 7 and - 21
Explanation:
let one number be n then the other number is 3n
then their product ( multiplication ) is 147 , that is
n × 3n = 147
3n² = 147 ( divide both sides by 3 )
n² = 49 ( take square root of both sides )
= ±
, that is
n = ± 7
if n = 7 then 3n = 3 × 7 = 21
the numbers are 7 and 21
if n = - 7 then 3n = 3 × - 7 = - 21
the numbers are - 7 and - 21