Question

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

Answer 1

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

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