Question

0,42-2,5=?
$- 13 + ( - 14) =$

Answer 1

$0.42 - 2.5 = \frac{42}{100} - 2 \frac{5}{10} = \frac{42}{100} - \frac{25}{10} = \frac{42 - 250}{100} = \frac{ - 208}{100} = - 2 \frac{8}{100} = - 2.08$

$- 13 + ( - 14) = - 13 - 14 = - (13 + 14) = - 27$