How about: LIII+XXVI = 79 which is 53+26 = 79
Sum = 79*(79+1)/2 = 79*80/2 = 3160
79 + 79 = 158
15x26=390
79 + 35 = 114
26+79=105
40+30+20+80=170
How about: LIII+XXVI = 79 which is 53+26 = 79
1,042
Sum = 79*(79+1)/2 = 79*80/2 = 3160
79 + 79 = 158
a + 79
79 + 79 = 158
15x26=390
The least common multiple of the numbers 79 and 26 is 2,054.
79 + 79 = 158 / 2 = 79.
79=1+3n79-1=1-1+3n78=3n78/3=3n/326=nn=26