Question

[(-5+3-10)-(-8+4-50)].[(-10.5)+(-3+4)].(-1)

Answer 1

[(-5+3-10)-(-8+4-50)].[(-10.5)+(-3+4)].(-1)
[-12-(-54)].[-50+1](-1)
[-12+54].[-49].(-1)
[+42].[-49].(-1)
  +2058