Carcass wrote:

If 4(r – s) = –2, then what is r, in terms of s ?

A) \(\frac{-8}{2}\)

B) \(s - \frac{1}{2}\)

C) \(s - \frac{3}{2}\)

D) \(s + 2\)

E) \(2s\)

Given: 4(r – s) = –2

[solve for r]Expand: 4r - 4s = -2

Add 4s to both sides: 4r = -2 + 4s

Rewrite right side: 4r = 4s - 2

Divide both sides by 4 to get: r = (4s - 2)/4

Check answer choices....not there. Looks like they want us to simplify.

We can use a nice rule that says (a - b)/c = a/c - b/c

So, (4s - 2)/4 = 4s/4 - 2/4

= s - 1/2

Answer:

Cheers,

Brent

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Brent Hanneson – Creator of greenlighttestprep.com

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