One number is four more than a second number. Three times the first is 12 less than 2 times the second. Find the numbers

Step-by-step explanation:

Let the number be x

x = 4y ... (1)

3y = 2x - 12 ... (2)

Putting (1) into (2)

3y = 2 (4y) - 12

3y = 8y - 12

3y - 8y = - 12

-5y = - 12

y = - 12/-5

y = 12/5

y = 2 2/5

And x = 4y

Putting y = 12/5

x = 4 * 12/5

x = 48/5

x = 9 3/5