Question

25 - {20 + [ 18 - (13 + 10 : 2) ] }=

Answer 1

25 - {20 + [ 18 - (13 + 10 : 2) ] }=

Na ordem: () dps [] dps {}

25 - {20 + [ 18 - (13 + 10 : 2) ] }=

25 - {20 + [ 18 - (13 + 5) ] }=

25 - {20 + [ 18 - (18) ] }=

25 - {20 + [ 18 - 18 ] }=

25 - {20 + [ 0 ] }=

25 - {20 +  0  }=

25 - {20}=

25 - 20=

5