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Find 5×2 3/7 step by step |
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Answer» Answer: Step-by-step EXPLANATION: Conversion a mixed number 3 2/ 3 to a improper fraction: 3 2/3 = 3 2/ 3 = 3 · 3 + 2/ 3 = 9 + 2/ 3 = 11/ 3 To find NEW numerator: a) Multiply the whole number 3 by the denominator 3. Whole number 3 equally 3 * 3/ 3 = 9/ 3 b) Add the answer from previous step 9 to the numerator 2. New numerator is 9 + 2 = 11 c) Write a previous answer (new numerator 11) over the denominator 3. Three and two thirds is eleven thirds Conversion a mixed number 2 1/ 7 to a improper fraction: 2 1/7 = 2 1/ 7 = 2 · 7 + 1/ 7 = 14 + 1/ 7 = 15/ 7 To find new numerator: a) Multiply the whole number 2 by the denominator 7. Whole number 2 equally 2 * 7/ 7 = 14/ 7 b) Add the answer from previous step 14 to the numerator 1. New numerator is 14 + 1 = 15 c) Write a previous answer (new numerator 15) over the denominator 7. Two and one seventh is fifteen sevenths Multiple: 11/ 3 * 15/ 7 = 11 · 15/ 3 · 7 = 165/ 21 = 55 · 3/ 7 · 3 = 55/ 7 Multiply both numerators and denominators. RESULT fraction keep to lowest possible denominator GCD(165, 21) = 3. In the next intermediate step, , CANCEL by a common factor of 3 GIVES 55/ 7 . In words - eleven thirds multiplied by fifteen sevenths = fifty-five sevenths. |
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