Question

me ajudem!!! preciso de ajuda pfv






calcule o valor de x

Answer 1

1) $\frac{2}{6} = \frac{x}{3} \\\\6x=6\\x=1$

2)$\frac{9}{x} = \frac{3}{15} \\\\3x=135\\x=\frac{135}{3} \\x=45$

3)$\frac{3}{8} = \frac{x}{4 - x} \\12-3x = 8x\\-3x-8x = -12\\-11x = - 12\\-x = \frac{-12}{-11} \\x = \frac{12}{11}$

4)$\frac{x}{3x} = \frac{2x}{3} \\3x=6x^{2} \\-6x^{2} +3x=0\\-3x(x + 3)\\-3x=0  OU   x + 3=0\\                  x= - 3$