18 + 79/4 = 151/4 or 373/4
It is: 5/18 plus 4/9 = 13/18
1.22222, or 22 over 18 (22/18), or 1 and 4 over 18 (1 4/18)
Sum = 79*(79+1)/2 = 79*80/2 = 3160
2/12 + 4/18 = 7/18
1/4 + 18 = 181/4 = 18.25 or 73/4
4/9 x 2/2 = 8/18 5/18 + 8/18 = 13/18
4/9
4/9 = 8/18 1/2 = 9/18 Total: 17/18
That's a total of 18.
79 49 + 25 = 74 74 - 4 = 70 70 + 9 = 79
5/6 + 4/9 = ? 15/18 + 8/18 = 23/18 or 1 5/18 or 1.28
4/7 + 18/21 = 210/147 or 10/7 or 13/7