Mathegoras

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  1. Ratio of alternating sums ●○○○○ 10 ptsFind the value of 2−4+6−8+10−12+143−6+9−12+15−18+21\frac{2-4+6-8+10-12+14}{3-6+9-12+15-18+21} as a fraction in lowest terms. Give the numerator and the denominator.