Question

For this question, I'd be adding 4 + 4 and 4 + 10 (because it say's to add 4 to both sides) but how am I to know it is equal on both sides like the question asks?
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Answer 1

They would be the same because you're adding the same number to each side.

Answer 2

If you used different numbers like 4 and let's say 15.. it wouldn't be the same on each side..

Answer 3

Ooh...so it was as simple as that??

Answer 4

I like to think of it like a balance :)