Explicación paso a paso:
[tex]decimos \: al \: numero = x \\ \frac{2x + 5}{3} = 7 \\ 2x + 5 = 21 \\ 2x = 16 \\ x = 16 \div 2\\ x = 8[/tex]
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Explicación paso a paso:
[tex]decimos \: al \: numero = x \\ \frac{2x + 5}{3} = 7 \\ 2x + 5 = 21 \\ 2x = 16 \\ x = 16 \div 2\\ x = 8[/tex]
suerteeee