Question

Por favor me ajudem nessa questão ?

15 - {3+(9-13-18)} =

Answer 1

15-{3+(9-13-18)}
15-{3+(-22)}
15-{-19}
15 - (-19)
15 + 19 
34

Answer 2

15-{3+(9-13-18)}
15-{3+(9-31)}
15-{3-22}
15-{-19}
15+19
34