Respuesta:
72
Explicación paso a paso:
[tex]4+ (8 + 5 7+ 9 -(8 + 7-9 )) = [/tex]
[tex]4+8+57+9−(15−9) \\ [/tex]
[tex]4+8+57+9−6 \\ [/tex]
[tex]12+57+9−6 \\ [/tex]
[tex]69+9−6 \\ [/tex]
[tex]78-6 \\ [/tex]
[tex] = 72 \\ [/tex]
Saludos.
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Respuesta:
72
Explicación paso a paso:
[tex]4+ (8 + 5 7+ 9 -(8 + 7-9 )) = [/tex]
[tex]4+8+57+9−(15−9) \\ [/tex]
[tex]4+8+57+9−6 \\ [/tex]
[tex]12+57+9−6 \\ [/tex]
[tex]69+9−6 \\ [/tex]
[tex]78-6 \\ [/tex]
[tex] = 72 \\ [/tex]
Saludos.