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2003 AMC 12B Problems/Problem 1

From AoPSWiki

Problem

Which of the following is the same as

$\frac{2-4+6-8+10-12+14}{3-6+9-12+15-18+21}$ ?

$\text {(A) } -1 \qquad \text {(B) } -\frac{2}{3} \qquad \text {(C) } \frac{2}{3} \qquad \text {(D) } 1 \qquad \text {(E) } \f...$

Solution

$\begin{align*}2-4+6-8+10-12+14=-2-2-2+14&=8\\3-6+9-12+15-18+21=-3-3-3+21&=12\\\frac{2-4+6-8+10-12+14}{3-6+9-12+15-18+...$

See also

2003 AMC 12B (Problems • Resources)
Preceded by First Question	Followed by Problem 2
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25

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Category: Introductory Algebra Problems

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