Question

urgent dau corona !!!!!​

Answer 1

Răspuns:

c) $\frac{1}{40}$

f)  $5$

Explicație pas cu pas:

c) $-\frac{1}{8} + \frac{3}{8} *\frac{2}{5} = -\frac{1}{8} + \frac{6}{40} = -\frac{5}{40} + \frac{6}{40} = \frac{1}{40}$

f) $\frac{12}{25} : \frac{3}{15} + 2*\frac{13}{10} = \frac{12}{25} *\frac{15}{3} + \frac{13}{5} = \frac{180}{75} + \frac{13}{5} = \frac{12}{5} + \frac{13}{5} = \frac{25}{5} = 5$