Question

(-15+4)+[-18+(-3-7+5)]

Answer 1

(-11) + (-18+(-5))
-11+(-18-5)
-11+(-23)
-11-23
=-34

Answer 2

Olá

Vamos lá

=(-15+4)+[-18+(-3-7+5)]
=-11+[-18+(-10+5)]
=-11+[-18+(-5)]
=-11+[-18-5]
=-11-23
=-34



Bons estudos, dúvidas só chamar !!! :>)) erico munayer