Question

1. 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

2. Which equation has no solution?
a. 8 - (5v + 3) = 5v - 5
b. 3m - 6 = 5m + 7 - m
c. 3w + 4 - w = 5w - 2(w - 2)
d. 7y + 9 = 7y - 6

I think the second one is c but i'm not sure. thanks. :)

Answer 1

@sophiathehuman .....check out option d in the 2nd q.

Answer 2

ohh that makes sense. what about the first question?

Answer 3

i dunno :) ...whats an identity?

Answer 4

an equation that's true no matter what value you use for the variable. ?

Answer 5

i got it!...check out option b

Answer 6

yay! both answers are right. :) thank you for your help

Answer 7

thank you