7. The sum of two numbers is 48. Find the numbers if the second is three more than four times the first

If the sum of two numbers is 48, we can call our numbers x and 48 - x.

Let's call our first number x and our second number 48 - x.

Now read through the rest of the problem.

The second, 48 - x, is, equals, 3 more than 4 times the first, 4x + 3.

So we have the equation 48 - x = 4x + 3.

Solving from here, we subtract 4x from both sides and we have 48 - 5x = 3.

Now subtract 48 from both sides and we have -45 = -5x.

Finally, divide both sides by -5 and remember that

a negative divided by a negative always equals a positive.

So we have 9 = x.

So our first number is x and our second is 48 - x or 48 - 9 which is 39.

check out this website

you will enjoy it as it give interesting things to look up or do!