Explicación paso a paso:
[tex]3x + 5 = 29 \\ 3x = 24 \\ x = 8[/tex]
[tex]23 = 7y - 5 \\ 28 = 7y \\ y = 4[/tex]
[tex]x + y = 12[/tex]
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Explicación paso a paso:
[tex]3x + 5 = 29 \\ 3x = 24 \\ x = 8[/tex]
[tex]23 = 7y - 5 \\ 28 = 7y \\ y = 4[/tex]
[tex]x + y = 12[/tex]