Question

AYUDAAAA
Efectuando operaciones [(6/7÷5/7]) +2 (1/5) -1 la expresión resultante es:
A) 3/7
B) 3/5

Answer 1

Respuesta:

$B)$

Explicación paso a paso:

$\left(\frac{\frac{6}{7}}{\frac{5}{7}}\right)+2\left(\frac{1}{5}\right)-1\\\\=\frac{\frac{6}{7}}{\frac{5}{7}}+2\cdot \frac{1}{5}-1\\\\=\frac{6\cdot \:7}{7\cdot \:5}+2\cdot \frac{1}{5}-1\\\\=\frac{6}{5}+2\cdot \frac{1}{5}-1\\\\=\frac{6}{5}+\frac{2}{5}-1\\\\=\frac{8}{5}-1\\\\=\frac{3}{5}$