Question

Va rog ajutati-ma urgent!!! Dau 100 puncte ​

Answer 1

Răspuns:

Explicație pas cu pas:

$f)~~(-\dfrac{^{4)}4}{9}+\dfrac{^{6)}1}{6})*(-\dfrac{6}{25})+(-\dfrac{1}{3})*0,7=(-\dfrac{16}{36}+\dfrac{6}{36})*(-\dfrac{6}{25})+(-\dfrac{1}{3})*\dfrac{7}{10}=\\=\dfrac{-16+6}{36}*(-\dfrac{6}{25})-\dfrac{7}{30}=-\dfrac{10}{36}*(-\dfrac{6}{25})-\dfrac{7}{30}=\dfrac{10*1}{6*25}-\dfrac{7}{30}=\dfrac{2}{30}-\dfrac{7}{30}=\\=\dfrac{2-7}{30}=-\dfrac{5}{30}=-\dfrac{1}{6} .$

Answer 2

$\it \Big(-\dfrac{^{2)}4}{\ 9}+\dfrac{^{3)}1}{\ 6}\Big)\cdot\Big(-\dfrac{6}{25}\Big)+\Big(-\dfrac{1}{3}\Big)\cdot0,7=\Big( \dfrac{-8+3}{18}\Big)\cdot\Big(-\dfrac{6}{25}\Big)+\Big(-\dfrac{1}{3}\Big)\cdot\dfrac{7}{10}=\\ \\ \\ =\Big(-\dfrac{5}{18}\Big)\cdot\Big(-\dfrac{6}{25}\Big)+\Big(-\dfrac{1}{3}\Big)\cdot\dfrac{7}{10}=\dfrac{\ 30^{(15}}{450}-\dfrac{7}{30} =\dfrac{2}{30}-\dfrac{7}{30}=-\dfrac{\ 5^{(5}}{30}=-\dfrac{1}{6}$