Question

resolver las ecuaciones

Answer 1

Respuesta:

$\frac{x + 2}{8} = \frac{3}{4} \\ 4(x + 2) = 8 \times 3 \\ 4x + 8 = 24 \\ 4x = 24 - 8 \\ x = \frac{16}{4} \\ x = 4$

$\frac{3}{y + 2} = \frac{9}{y} \\ 3 \times y = 9(y + 2) \\ 3y = 9y + 18 \\ 3y - 9y = 18 \\ - 6y = 18 \\ y = \frac{18}{ - 6} \\ y = - 3$

$4(x - 2) - 5x = 16 \\ 4x - 8 - 5x = 16 \\ - x = 16 + 8 \\ x = - 24$

$5x + 10 = - 15 \\ 5x = - 15 - 10 \\ x = \frac{ - 25}{5} \\ x = - 5$

$\frac{x}{4} = \frac{6}{5} \\ 5x = 4 \times 6 \\ x = \frac{24}{5}$

$\frac{x}{4} + \frac{5}{12} = \frac{2}{3} \\ \frac{3x + 5}{12} = \frac{2}{3} \\ 3(3x + 5) = 12 \times 2 \\ 9x + 15 = 24 \\ 9x = 24 - 15 \\ x = \frac{9}{9} \\ x = 1$

$9x - 5 = 3(x - 2) + 13 \\ 9x - 5 = 3x - 6 + 13 \\ 9x - 3x = 13 - 6 + 5 \\ 6x = 12 \\ x = 2$

$3x - 7 + 2x = - 7x + 9 \\ 5x + 7x = 9 + 7 \\ 12x = 16 \\ x = \frac{16}{12} \\ x = \frac{4}{3}$

$\frac{x}{3} - \frac{3}{5} = 4 \\ \frac{5x - 9}{15} = 4 \\ 5x - 9 = 4 \times 15 \\ 5x = 60 + 9 \\ x = \frac{69}{5}$

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