Question

-5*{60-45-2[25-(81*3:-9*2+7-5)+(-32+18-20)+18:-4]+19} resultado?

Answer 1

-5*{60-45-2[25-(81*3÷9*2+7-5)+(-32+18-20)+18÷4]+19} 

-5*{60-45-2[25-(81*3÷9*2+7-5)-32+18-20+18÷4]+19}

-5*{60-45-2[25-81÷3*9÷2-7+5-32+18-20+18÷4]+19}

-5*{60-45-2+25-81÷3*9÷2-7+5-32+18-20+18÷4+19}

-5*60+45+2-25+81*3÷9*2+7-5+32-18+20-18*4-19

300+45+2-25+54+7-5+32-18+20-72-19

     + | -
 300 | 25
   45 |   5
     2 | 18
   54 | 72
     7 | 19
  32  |   20 
____|____
+419| -139

+419 -139 = +280

-5*{60-45-2[25-(81*3÷9*2+7-5)+(-32+18-20)+18÷4]+19}  = +280