Question 1173288: are these expressions equivalent? explain.
2w+1t, 2w+t, 3x+1, 3x
Explain when you must write the number 1, and when you do not need to.
Answer by Edwin McCravy(20056)   (Show Source):
You can put this solution on YOUR website!
1 and 0 are special numbers.
When you multiply by 1, you don't change what
you're multiplying it by.
When you add 0, you don't change what
you're adding it to.
When you multiply by 0, you do change what
you're multiplying it by.
When you add 1, you do change what
you're adding it to.
--------------------------------
2w+1t and 2w+t are equivalent because MULTIPLYING by 1 does NOT change the value
of t.
HOWEVER,
3x+1 and 3x are NOT equivalent because ADDING 1 DOES change the value of 3x.
Edwin
|
|
|
