Evaluate 3(2m – 3n) – 2(m + 2n) for m = –9 and n = –7. A. -163 B. -37 C. -71 D. 55
3(2m – 3n) – 2(m + 2n) for m = –9 and n = –7 3(2(-9) - 3(-7)) - 2(-9 + 2(-7) 3(-18 + 21) - 2(-9 - 14) 3(3) - 2(-23) 9 + 46 = 55
Question
Updated 3/23/2014 10:11:12 AM
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3(2m – 3n) – 2(m + 2n) for m = –9 and n = –7

3(2(-9) - 3(-7)) - 2(-9 + 2(-7)

3(-18 + 21) - 2(-9 - 14)

3(3) - 2(-23)

9 + 46

= 55

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