p = 4(adsbygoogle = window.adsbygoogle || []).push({});

q = -2

r = 3

s = -5

on that basis, evaluate this expression:

3r - 3p + 5q

I make it to be -7 (15 - 12 + (-10)

But my math book says the answer is -13. Can anyone explain where I have gone wrong?

Thanks

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# Homework Help: Evaluate this expression

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