Question

1) -3,77 + (-7,89);​

Answer 1

$- \: 3.77 \: + \: ( - \: 7.89) \: = \: - \: 3.77 \: - \: 7.89 \: = \: - \: 11.66$

Answer 2

The result of adding -3.77 and -7.89 is:

-3.77 + (-7.89) = -11.66