Respuesta :

ιт ιѕ -77

нσρє ι ¢συк∂ нєℓρ υ συт тσ∂αу!!!!!!

Answer: -77

Reasoning:

77+77=154 (NOPE)

77+(-77)=0 (YES)

77+0=77 (NOPE)

77+(-76)=1 (NOPE)