[(15 + 6) ÷ 3] + 10 (6 - 3) =
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6/10 + 3/9 = 3/5 + 1/3 = 9/15 + 5/15 = 14/15
Mean is calculated by adding the numbers, then divide by the count of numbers.The count is 3 in this case. 15 + 10 + 15 = 40, so mean = 40/3 = 13.3333.....
2/3 + 1/5 = 10/15 + 3/15 = 13/15
9/15 + 10/15 = 1 and 4/15
3/2 or 1.5 or 1 1/2 3/5 ÷ 2/5 =3/5 *5/2 = 15/10 divide 15 and 10 by 5 15/5=3 10/5=2