Question

12+3{-6+2]5-4(3-2)+5(7-8)]-5}​

Answer 1

12+3{-6+2[5-4(3-2)+5(7-8)]-5}​

12+3{-6+2[5-4(1)+5(-1)] -5}​

12+3{-6+2[5-4​-5]-5}​

12+3{-6+2[-4]-5}​

12+3{-6-8-5}​

12+3{-19}​

12 - 57 = -45

Espero que te haya ayudado ^^