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what is 3/5 plus 3/17 using benchmarks.

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HolmesNWatson
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 :)
maddaxokok

Answer:I think it’s 1/2 or 1 but I’m almost positive that it’s one of thos plz give me brain list I’ll need it

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