Respuesta:
3/20
Explicación paso a paso:
0
[tex]0.4 \times \frac{10}{10 } = \frac{4}{10} [/tex]
[tex] \frac{1}{2} + \frac{4}{10 } = \frac{5}{10} + \frac{4}{10} = \frac{9}{10} [/tex]
[tex] \frac{9}{10} - \frac{3}{4} = \frac{36}{40} - \frac{30}{40} = \frac{6}{40} = \frac{3}{20} [/tex]
