Sum = 79*(79+1)/2 = 79*80/2 = 3160
79 + 79 = 158 / 2 = 79.
79, -79
1,042
The answer to 1 plus 2 plus 3 plus 4 plus 0.78 plus 79 plus 80 is 169.78. This can be calculated by adding all the numbers together: 1 + 2 + 3 + 4 + 0.78 + 79 + 80 = 169.78.
79 + 79 = 158
a + 79
79 + 79 = 158
9h + 2 < - 79 9h < - 81 h < - 9
9h + 2 = -79 9h = -81 h = -81/9 h = -9
42 + 79 = 121 (40+70) + (2+9) = = 110 + 11 = 121
79