Question

ecuaciones:
d) -0.4x = 1.2
b) 0.09x = -0.27
c) -0.25x = 0.75​

Answer 1

Respuesta:

Mucha suerte, saludos.

Explicación:

Convirtiendo a fracciones

D)

$- \frac{4}{10}x = \frac{12}{10 }$

B)

$\frac{9}{100} x = - \frac{27}{100}$

C)

$- \frac{25}{100} x = \frac{75}{100}$

Simplificando

D)

$- \frac{2}{5} x = \frac{6}{5} \\ x = \frac{6}{5} \div - \frac{2}{5} \\ x = \frac{6}{5} \times \frac{ 5}{ - 2} \\ x = - 3$

B)

$x = - \frac{27}{100} \div \frac{9}{100} \\ x = \frac{ - 27}{100} \times \frac{100}{9 } \\ x = - 3$

C)

$- \frac{1}{4} x = \frac{3}{4} \\ x = \frac{3}{4} \div \frac{ - 1}{4} \\ x = \frac{3}{4} \times \frac{4}{ - 1} \\ x = - 3$