Question

If the difference between two numbers is 6 and one number is 3 times the other. Find the numbers by substitution method.​

Answer 1

Answer:

$let \: one \: no \: be = x \\ and \: other \: = y \\ \\ as \: x - y = 6 \\ and \: x = 3y \\ so \: 3y - y = 6 \\ y = 3 \\ and \: x - 3 = 6 \\ x = 9$