anonymous
  • anonymous
3/5 + 3/17 using benchmark?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
The best thing to do is to find a common denomiantor, and you can do this by listing the multiples. 5- 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 17- 17 34 51 68 85 102 The lowest common multiple is 85, so you've got to multiply the first fraction by 17, and the second by 5. 3x17= 54, 5x17= 85 and 3x5= 15, 5x17= 85. this then becomes 54/85 and 15/85, when you're adding fraction, you add the denominators- 54+15= 69, therefore, the fraction becomes 69/85 Hope this helps :)

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