Question

Which equation is an identity?

a)11 – (2v + 3) = –2v – 8
b)5w + 8 – w = 6w – 2(w – 4)
c)7m – 2 = 8m + 4 – m
d)8y + 9 = 8y – 3

Answer 1

5w + 8 – w = 6w – 2(w – 4)

5w + 8 – w = 6w – 2w + 8

4w + 8 = 4w + 8 ... which is ALWAYS true

so this is an identity

I'll let you check the others