Question

{ 7 – 2 + [- (3 – 4) + 11 ] – (7 - 15) } es igual a

Answer 1

{7-2+[-(3-4)+11]-(7-15)}

{7-2+[-3+4+11]-7+15}

{7-2-3+4+11-7+15}

7-2-3+4+11-7+15=25

Espero que te sirva!