Draw a x over the multiples of 10. what digit do all multiples of 10 have in common?

its 4 i think

Step-by-step explanation:

|x| = 4    This means: What value can we substitute for x to get an answer of 4?

**You might automatically say: x = 4    because |4| = 4

Yes, you are correct! However, this is not the only answer. You will have two answers for this equation because:

Isn't |-4| = 4 ?

So, this answer is x = 4 or -4.