Question

Which equation is an identity
A. -4y+3=-4y-8
B. 15-(6v+6)=-6v-9
C. 3w =4-w=4w-2(w-2)
D. 5m-4=6m=5-m

Answer 1

for an identity, terms on LHS(left hand side) is equal to terms on RHS
What you need to the is to expand the the terms, then simplify it. After that, compare the LHS and RHS to see which is the same. Remember not to 'swap' the terms to the other side. Try it now!

Answer 2

Hmm.. give you an example.
Consider A
On LHS you have -4y+3
On RHS, you have -4y-8
Since the term for y is the same but the constant term is different (for LHS it is 3, but for RHS, it is -8)
Therefore, it is not an identity

Answer 3

you're welcome, but do you understand it now?

Answer 4

Hmmm, any one of the terms...

Answer 5

you can say so, it's an equation rather than an identity

Answer 6

welcome :)

Answer 7

Why?