Question

Resultado de 25-(8-5+3)-(12-5-8)

Answer 1

25 - (8 - 5 + 3) - (12 - 5 - 8)

25 - (3 + 3) - (7 - 8)

25 - (6) - (-1)

25 - 6 + 1

25 - 5

20

Resposta: 20

Answer 2

Olá...

$25 - (8 - 5 + 3) - (12 - 5 - 8) = \\ \\ 25 -(3 + 3) - (7 - 8) = \\ \\ 25 - 6 - ( - 1) = \\ \\ 25 - 6 + 1 = \\ \\ 19 + 1 = \\ \\ 20$

...ok