Question

Which statement best explains why the value of this expression is equal to −812y? 414x − 812y − 414x

Answer 1

For this case we have the following expression:
 414x - 812y - 414x
 Rewriting we have:
 414x - 414x - 812y
 We group similar terms:
 (414x - 414x) - 812y
 Adding we have:
 0 - 812y
 - 812y
 Answer:
 The sum of a number and its opposite is 0, and the sum of any number and 0 is the number itself.