-81 + 11 = -70
(-11) + (-89) + 5 + (-67) + (-81) + (-27) = -270
It is: 11+5+32+81 = 129
7 + 4/11 = 81/11 or 7.3636..
78 + 79 + 80 + 80 + 81 + 81 = 479
81*82/2= 3321
-81
81
105 + 66 + 287 + 81 = 539
6x+11=92-3x +3x +3x 9x+11=92 -11 -11 9x=81 divide by 9 x=9
-81 + 43 = -38
81 + 36 = 117
18 + 81 = 99