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using simple algebra. A multiple of 7 can be written as 7a or 7b where a, b are elements of the set of real numbers so adding them you have 7a + 7b = 7(a+b) and 7(a+b) is a multiple of 7 since a+b is rea. Try putting any value for a and b and see whether it works .(It should do)
What else can I help you with?
Is the sum of two rational numbers is it rational or irrational?
Such a sum is always rational.
Do multiples of 4 always end in 2 4 and 8?
No For example, 16 is a multiple of 4 but ends in a 6. 20 is a multiple of 4, but ends in 0. To check to see if a number is a multiple of 4, see if the last two digits are a multiple of 4 or '00'. If the last two digits are a multiple of 4 or are '00', the entire number is a multiple of 4.
What are consecutive integers with the sum of 116?
The sum of two consecutive integers will always be an odd number.
Can the sum of three polynomials again be a polynomial?
The sum of two polynomials is always a polynomial. Therefore, it follows that the sum of more than two polynomials is also a polynomial.
What is the the greatest common multiple of any two numbers?
There is no "greatest common multiple" of any two numbers. Whatever their product is, it can be multiplied by any positive integer to yield an even greater number that is also a multiple of the first two. Thus, the number of multiples is infinite.
Find the multiple of 6 Then find the multiple of 8 What is the sum of these two multiples?
2
When you add two multiples 3 do you always get a multiple of 3?
Yes.
The sum of any two-digit number and the number formed by reversing the digits is always divisible by what?
The sum of any two-digit number and the number formed by reversing the digits is always divisible by 11. This is because when you add a two-digit number to its reverse, the result will always be a multiple of 11. This is because the difference between the original number and its reverse is always a multiple of 9, and when you add two multiples of 9, the sum will always be a multiple of 11.
Is always a multiple of 4 between any two multiples of 5?
Yes.
When you add two multiples 3 you always get a multiple of 3?
YES 3+9=12 which is multiples of 3 30+3=33 which is multiple of 3 and so on..
What two-digit prime number has the sum of its digits that is not 7 but is a multiple of 7?
No two digit prime number exists that is a multiple of 7. All two digit numbers that are multiples of 7 are compositenumbers.
Is the ratio of two multiples of 3 always a multiple of 3?
No. The ratio of 3 and 6 is 1:2
Is the sum of two even numbers always a multiple of 4?
Nope. 2+4=6
What is the sum of two digit multiples of 11?
495
Find four consecutive multiples of 4 whose sum of the first two multiple is equal to the fourth?
8, 12, 16 & 208 + 12 = 20
Is the LCM of two numbers their product?
Yes, the least common multiple is the product of the two numbers or the lowest number that both multiples can go into.
What are the multiples of 10 and two?
Any multiple of 10 is also a multiple of 2.
