Question

Efectuați calculele, folosind ordine efectuării operatiilor. Ajutorr!!! Ex7​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

$\it f)\ \ =-\dfrac{7}{5}\cdot(\dfrac{4}{49}+\dfrac{^{7)}8}{7})+(\dfrac{1}{18}+\dfrac{^{2)}1}{\ 9})\cdot(-\dfrac{15}{7})=-\dfrac{7}{5}\cdot\dfrac{60}{49}-\dfrac{3}{18}\cdot\dfrac{15}{7}=\\ \\ \\ =-\dfrac{\ \ 420^{(35}}{245}-\dfrac{\ 45^{(3}}{126}=-\dfrac{^{6)}12}{\ 7}-\dfrac{15}{42}=\dfrac{-72-15}{42}=-\dfrac{\ 87^{(3}}{42}=-\dfrac{29}{14}=-2\dfrac{1}{14}$

$\it h)\ \ =\dfrac{1}{2}+\dfrac{4}{33}\cdot(-\dfrac{1}{4}+\dfrac{^{2)}27}{\ 2})=\dfrac{1}{2}+\dfrac{4}{33}\cdot\dfrac{53}{4}=\dfrac{^{33)}1}{\ \ 2}+\dfrac{^{2)}53}{\ \ 33}=\dfrac{139}{66}=2\dfrac{7}{66}$