2/5 - 3/10 = (2×2)/(5×2) - 3/10 = 4/10 - 3/10 = (4-3)/10 = 1/10.
No ------------------------------------------------ 4/5 = (4×2)/(5×2) = 8/10 8 ≠ 3 → 8/10 ≠ 3/10 → 4/5 ≠ 3/10
5/10 - 3/10 = 2/10 = 1/5
Average(5, 10, 15) = (5 + 10 + 15)/3 = 30/3 = 10
4/10 - 3/5 = 2/5 - 3/5 = -1/5
3/10 + 3/5. You make both denominators the same, so 3/5 is the same as 6/10. Therefore 3/10 + 3/5 is the same as 3/10 + 6/10 = 9/10.
3/5 is 6/10. (6-3)/10 is 3/10
2/5 - 3/10 = (2×2)/(5×2) - 3/10 = 4/10 - 3/10 = (4-3)/10 = 1/10.
10/3 * 5 = 5*10/3 = 50/3 50/3 is 16+2/3 and about 16.67
(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3
1/5 + 3/10 = 2/10 + 3/10 = 5/10 = 1/2
4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 1/2
3/10 - 4/5 = 3/10 - 8/10 = -5/10 = -1/2
3/5 minus 3/10 is the same as 6/10 minus 3/10 = 3/10
No ------------------------------------------------ 4/5 = (4×2)/(5×2) = 8/10 8 ≠ 3 → 8/10 ≠ 3/10 → 4/5 ≠ 3/10
3/5 * 3/10 = 9/50
(1/5) / (3/10) = (1/5) x (10/3) = 10/15 = 2/3