79 + 110 = 189
42 + 79 = 121 (40+70) + (2+9) = = 110 + 11 = 121
79 + k = 84 84 - 79 = k k = 5
9h + 2 < - 79 9h < - 81 h < - 9
1,042
79 + 79 = 158
Sum = 79*(79+1)/2 = 79*80/2 = 3160
a + 79
79 + 79 = 158
79 + 79 = 158 / 2 = 79.
79
The solution to 79 plus 39 is 118. The solution to 79 minus 39 is 40.
200 plus 79 equals 279