[tex]\left(-7\right)\left(9\right)-\left(-8\right)\left(8\right)[/tex]
[tex]\left(-7\right)\left(9\right): -63[/tex]
[tex]=-63-\left(-8\right)\left(8\right)[/tex]
[tex]\left(-8\right)\left(8\right):-64[/tex]
[tex]=-63-\left(-64\right)[/tex]
[tex]\boxed{=1}[/tex]
[tex]Buena\:suerte\:con\:tus\:tareas\::ProfeAndresFelipe :)[/tex]
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RESOLVER:
[tex]\left(-7\right)\left(9\right)-\left(-8\right)\left(8\right)[/tex]
[tex]\left(-7\right)\left(9\right): -63[/tex]
[tex]=-63-\left(-8\right)\left(8\right)[/tex]
[tex]\left(-8\right)\left(8\right):-64[/tex]
[tex]=-63-\left(-64\right)[/tex]
[tex]\boxed{=1}[/tex]
[tex]Buena\:suerte\:con\:tus\:tareas\::ProfeAndresFelipe :)[/tex]