Question

-30-5×[(-1)×(15-3×6)+9-3×4]

Answer 1

-30-5*[(-1)*(15-3*6)+9-3*4]=
=-30-5*[(-1)*(15-18)+9+3*4]=
=-30-5*[(-1)*(-3)+9+3*4]=
=-30-5*(3+9+3*4)=
=-30-5*(12+12)=
=-30-5*24=
=-30-120=
=-150

Answer 2

-30-5×[(-1)×(15-3×6)+9-3×4]
-30-5×[(-1)×(-3)+9-3×4]
-30-5×[3+9-3×4]
-30-5×[12-12]
-30-5×[0]
-30 - 0
-30