Two ribbons of 84 and 126 centimeters must be cut into equal pieces of the greatest possible length with no remainder. How long is each piece?
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- Find the greatest common divisor of 84 and 126.
- Factor 84 and 126 and take their common part.
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Answer: 42
We need the greatest common divisor of 84 and 126. It is 42, so each piece is 42 centimeters long.