Question

Of two numbers, one is 7 more than the other. Find the numbers if their sum is 21

Answer 1

Hi there! The smallest number is 7 and the largest number is 14.

Let the smallest number be represented by X.
The largest number is therefore equal to X + 7.

Now we can set up and solve an equation.
$x + x + 7 = 21$

Collect terms
$2x + 7 = 21$

Subtract 7 from both sides.
$2x = 14$

Divide both sides by 2.
$x = 14 \div 2 = 7$

Hence, the smallest number is 7 and the largest number is 7 + 7 = 14.

Answer 2

It would be 14 and 7.