Explicación paso a paso:
[tex] \frac{12}{3} + \frac{4x}{5} = 10 \\ 4 + \frac{4x}{5} = 10 \\ 20 + 4x = 50 \\ 4x = 50 - 20 \\ 4x = 30 \\ x = \frac{30}{4} \\ x = \frac{15}{2} [/tex]
[tex]e = 2x + 5 \\ e = 2( \frac{15}{2} ) + 5 \\ e = 15 + 5 \\ e = 20[/tex]
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Explicación paso a paso:
[tex] \frac{12}{3} + \frac{4x}{5} = 10 \\ 4 + \frac{4x}{5} = 10 \\ 20 + 4x = 50 \\ 4x = 50 - 20 \\ 4x = 30 \\ x = \frac{30}{4} \\ x = \frac{15}{2} [/tex]
[tex]e = 2x + 5 \\ e = 2( \frac{15}{2} ) + 5 \\ e = 15 + 5 \\ e = 20[/tex]