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, 2015 Difficulty 1.0 Junior Find the answer Canada
The value of 2 × 2015 − 2015 2\times 2015 - 2015 2 × 2015 − 2015
Pick one
A 2015 2015 2015 B 4030 4030 4030 C 6045 6045 6045 D 0 0 0 E − 2015 -2015 − 2015
Solution Evaluating, 2 × 2015 − 2015 = 4030 − 2015 = 2015 2 \times 2015 - 2015 = 4030 - 2015 = 2015 2 × 2015 − 2015 = 4030 − 2015 = 2015
Alternatively, 2 × 2015 − 2015 = 2 × 2015 − 1 × 2015 = 1 × 2015 = 2015 2 \times 2015 - 2015 = 2 \times 2015 - 1 \times 2015 = 1 \times 2015 = 2015 2 × 2015 − 2015 = 2 × 2015 − 1 × 2015 = 1 × 2015 = 2015
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