Question

state whether it's true or false if a number divides two number separately then it must divide their sum how​

Answer 1

It is true. If two separate numbers are let ak and bk, which a multiple of k.

Then their sum is equal to ak+bk, or k(a+b).

Now the number will divide their sum. With quotient a+b.

Answer 2

Answer:

Yes it's true

Step-by-step explanation:

If a number is divisible by both 9 and 10 then it must be divisible by 90.So if a number divides two number separately then it must divide their sum