Question

Me ayudarian resolviendo esta operación combinada ( paso a paso ). porfavor 46 – { 38 – (-2) + (- 9) + ( 42 – 18 + ( -15) ) – ( -7 ) } =

Answer 1

46-{38- (-2)+(-9)+(42-18-15)-(-7)}
46-{38+2-9+42-18-15+7}
46-38-2+9-42+18+15-7
8-2+9-42+18+15-7
6+9-42+18+15-7
15-42+18+15-7
-27+18+15-7
-9+15-7
6-7
-1