# Quick Answer: What Two Numbers Have A Sum Of 21 And A Difference Of 7?

## What number is half of 21?

10.5Answer and Explanation: Half of 21 is 10.5..

## What is the sum of the numbers?

In mathematics, sum can be defined as the result or answer we get on adding two or more numbers or terms. Here, for example, addends 8 and 5 add up to make the sum 13.

## What two numbers have a sum of 29 and a difference of 5?

17 + 12 = 29; 17 – 12 = 5; The numbers are 17 and 12.

## What is the common factor of 21 and 30?

Greatest Common Factor of 21 and 30 Greatest common factor (GCF) of 21 and 30 is 3.

## What two numbers add up to 21?

Therefore the factors of 21 are 1, 3, 7 and 21. All that is left to do is to work out the sum of these numbers, that is to add them all up.

## What two numbers have the sum of 20 and the difference of 6?

What are the numbers? Answer: -4 and 2. Originally Answered: Two numbers have a difference of 6, the sum of their square is 20.

## What are the factors of 21?

The factors of a number 21 are the numbers, that produce the result as 21 when a pair factor is multiplied together. A factor of a number divides the original number uniformly. The factors of 21 are 1, 3, 7 and 21.

## What 2 numbers have a sum of 15 and 36?

1 Answer. The numbers are 3 and 12 .

## What are the common factors of 28 and 21?

What is the GCF of 21 and 28The factors of 21 are 21, 7, 3, 1.The factors of 28 are 28, 14, 7, 4, 2, 1.The common factors of 21 and 28 are 7, 1, intersecting the two sets above.In the intersection factors of 21 ∩ factors of 28 the greatest element is 7.Therefore, the greatest common factor of 21 and 28 is 7.

## What are the first 5 multiples of 21?

Thus, the first five multiples of 21 are 21, 42, 63, 84 and 105.

## What 3 numbers add 21?

Therefore, three consecutive integers that add up to 21 are 6, 7, and 8. We know our answer is correct because 6 + 7 + 8 equals 21 as displayed above.

## What two numbers have a sum of 16 and a difference of 6?

the numbers are 5 and 11.

## What is the sum of two odd numbers?

Odd numbers have the digits 1, 3, 5, 7 or 9 in their ones place. The sum of two odd numbers is always even. The product of two or more odd numbers is always odd.

## What two numbers have a sum of 18 and a difference of 6?

The answer is 6. Therefore, the two numbers are 12 and 6.

## How do u find the difference between two numbers?

Percentage Change | Increase and DecreaseFirst: work out the difference (increase) between the two numbers you are comparing.Increase = New Number – Original Number.Then: divide the increase by the original number and multiply the answer by 100.% increase = Increase ÷ Original Number × 100.More items…

## What two numbers have a sum of 7 and a difference of 1?

Hence, the two numbers are 4 and 3.

## How do you find the sum and difference of two numbers?

When you have a sum and a difference and add them together, that is the same as doubling one of them. For example, if the two numbers are 7 and 4, then the sum is 11 and the difference is 3. When we add the sum and the difference together, we get 14, which is double the original 7.

## What is the sum of the two numbers?

Answer: Sum means add and product means multiply. The two numbers are 1 and 12, as 1 + 12 = 13 and 1 multiplied by 12 gives 12.

## What three consecutive odd integers have a sum of 21?

So the three consecutive odd numbers whose sum equals to 21 are 5,7 and 9.

## What two numbers make 18?

There are at least two combinations of two numbers that you can multiply together to get 18….1 x 18 = 18 2 x 9 = 18 3 x 6 = 18 6 x 3 = 18 9 x 2 = 18 18 x 1 = 18 x 18 = 18. x 9 = 18. x 6 = 18.

## What two numbers have a sum of 30 and a difference of 6?

12 and 18 add up to 30. Their difference is 6. these 2 numbers are . 18 , and , 12 .