Question

ayuda gracias especialmente para nallely

Answer 1

$\frac{1}{13} + \frac{x}{13} = \frac{35}{28} \\ 28 +28x = 455 \\ 28x = 455 - 28 \\ 28x = 427 \\ x = 427 \div 28 \\ x = \frac{61}{4}$

$\frac{x}{34} - \frac{4}{17} = 0 \\ x - 8 = 0 \\ x = 8$

$\frac{13}{14} + \frac{x}{7} = \frac{9}{14} \\ 13 + 2x = 9 \\ 2x = 9 - 13 \\ 2x = - 4 \\ x = - 4 \div 2 \\ x = - 2$

espero haberte ayudado