-81 + 43 = -38
38 + 43 = 81
36 + 42 - 6 + 28 - 43 + 81 - 6 = 132
The answerer is 344
1, 43 1, 3, 9, 27, 81
78 + 79 + 80 + 80 + 81 + 81 = 479
81
The GCF is 1.
136
119
It is about 81% rounded
81*82/2= 3321
20, The pattern goes half (154/2 = 77), plus four (77 + 4 = 81), minus three (81 - 3 = 78), and then repeat.