Question

Is 9 a factor of 56a+12b?

Answer 1

[AI-generated answer — Bot GPT 3.5]

To determine if 9 is a factor of the expression 56a + 12b, we need to check if 56a + 12b is divisible by 9.

We can start by checking if the sum of the digits in 56a + 12b is divisible by 9. If the sum of the digits is divisible by 9, then the number itself is divisible by 9.

The sum of the digits in 56a + 12b is 5 + 6 + a + 1 + 2 + b = 14 + a + b.

For 56a + 12b to be divisible by 9, the sum of the digits 14 + a + b must also be divisible by 9.

However, we cannot determine if 9 is a factor of 56a + 12b without specific values for 'a' and 'b'.