Question

me ajudem por favor é urgente poooor. favoooor ​

Answer 1

Resposta:

a)

$\frac{2x + 1}{5x - 1} = \frac{4}{6} \\ 6(2x + 1) = 4(5x - 1) \\ 12x + 6 = 20x - 4 \\ 12x - 20x = - 4 - 6 \\ - 8x = - 10 \\ x = \frac{10}{8} = \frac{5}{4}$

b)

$\frac{x}{1} = \frac{3}{2} \\ 2x = 3 \\ x = \frac{3}{2}$

c)

$\frac{10}{x} = \frac{7}{14} \\ 7x = 140 \\ x = 20$

$\frac{20}{8} = \frac{14}{y} \\ 20y = 112 \\ y = \frac{28}{5}$

d)

$\frac{8}{x + 1} = \frac{12}{2x - 6} \\ 8(2x - 6) = 12(x + 1) \\ 16x - 48 = 12x + 12 \\ 16x - 12x = 12 + 48 \\ 4x = 60 \\ x = 15$