77 + 89 = 166
89
39 plus 89 plus 80 is equal to 208.
15 + 77 = 92
77 plus 76 plus 69 plus 56 is equal to 278.
237
84 + 96 + 72 + 77 + 91 = 420
51 percent plus 77 percent = 128 percent 51% + 77% = 128%
-65
89+x=x 89=x-x 89=0 Therefore, "No solution".
It is: 668+77 = 745
77+1 = 78 is one such example