Explicación paso a paso:
[tex]-4(2m-7) \\ [/tex]
[tex]7−4×2m−4×−7 \\ [/tex]
[tex]−8m−4×−7 \\ [/tex]
[tex]−8m−(−28) \\ [/tex]
[tex] - 8m + 28 \\ [/tex]
Saludos.
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Explicación paso a paso:
Procedimiento:
[tex]-4(2m-7) \\ [/tex]
[tex]7−4×2m−4×−7 \\ [/tex]
[tex]−8m−4×−7 \\ [/tex]
[tex]−8m−(−28) \\ [/tex]
[tex] - 8m + 28 \\ [/tex]
Saludos.