The answer is 112. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
1,042
Sum = 79*(79+1)/2 = 79*80/2 = 3160
79 + 79 = 158
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
15 + 41 + 23 = 79
79 + 45 = 124
49 + 79 = 128