Question

Please help me!

Answer 1

What do you have?

Answer 2

Which equation is an identity?

A. 8-(5x+2) = -5x -6
B. 7z+10-z = 8z-2(z-5)
C. 8m-4=5m + 8-m
D. 6y+5=6y-5

Answer 3

An identity equation is one that is true, no matter what you plug in for x or y or m or n. The first one looks to be true, but is not actually, because even though 8-2 is 6, the 6 on the right is a negative. The one on the left is not a negative.

Answer 4

For the second one, they have subtracted 1z from 7z and got 8z on the other side of the equation, and that is not true, either, is it?

Answer 5

C is completely whacky! Not happening! So that leaves d.

Answer 6

Thank you!

Answer 7

Can you help me with another?