Question

Daca a=2,5 si b=( $- \frac{6}{5}$ )  calculati a+b si a*b

Answer 1

[tex]a=2,5= \frac{25}{10}= \frac{5}{2} \\ \\ b=- \frac{6}{5} \\ \\ a+b= \frac{25}{10}+(^{2)}- \frac{6}{5}) \\ \\ a+b= \frac{25}{10}- \frac{12}{10} \\ \\ \boxed{a+b= \frac{13}{10}} \\ \\ a*b= \frac{5}{2}*(- \frac{6}{5}) \\ \\ a*b=- \frac{30}{10} \\ \\ \boxed{a*b=-3} [/tex]