Explicación paso a paso:
hola ✓
[tex](15 - (6 + 7) ) - (13 - ( - 15 + 3 - 8)) = [/tex]
[tex](15 - 13) - (13 - ( - 20) ) = [/tex]
[tex]2 - 13 + 20 = [/tex]
[tex] - 11 + 20 = [/tex]
[tex] = 9[/tex]
espero te sirva saludos✓
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Explicación paso a paso:
hola ✓
[tex](15 - (6 + 7) ) - (13 - ( - 15 + 3 - 8)) = [/tex]
[tex](15 - 13) - (13 - ( - 20) ) = [/tex]
[tex]2 - 13 + 20 = [/tex]
[tex] - 11 + 20 = [/tex]
[tex] = 9[/tex]
espero te sirva saludos✓