\(a,-2,5\cdot\left(\dfrac{-3}{25}\right)\\ =\dfrac{-5}{2}\cdot\dfrac{-3}{25}\\ =\dfrac{3}{10}\\ b,\dfrac{11}{4}\cdot\dfrac{-4}{9}\\ =\dfrac{-11}{9}\\ c,\dfrac{-6}{13}:\dfrac{9}{-26}\\ =\dfrac{-6}{13}\cdot\dfrac{-26}{9}\\ =\dfrac{6}{13}\cdot\dfrac{26}{9}\\ =\dfrac{4}{3}\\ d,\left(\dfrac{-12}{7}\right):\left(\dfrac{-31}{14}\right)\\ =\dfrac{-12}{7}\cdot\dfrac{-14}{31}\\ =\dfrac{12}{7}\cdot\dfrac{14}{31}\\ =\dfrac{24}{31}\)
\(a,-2,5.\left(\dfrac{-3}{25}\right)\)
\(=\dfrac{-5}{2}.\left(\dfrac{-3}{25}\right)\)
\(=\dfrac{\left(-1\right).\left(-3\right)}{2.5}\)
\(=\dfrac{3}{10}\)
\(b,\dfrac{11}{4}.\dfrac{-4}{9}\)
\(=\dfrac{11.\left(-1\right)}{1.9}\)
\(=\dfrac{-11}{9}\)
\(c,\dfrac{-6}{13}:\dfrac{9}{-26}\)
\(=\dfrac{-6}{13}:\dfrac{-9}{26}\)
\(=\dfrac{-6}{13}.\dfrac{-26}{9}\)
\(=\dfrac{\left(-2\right).\left(-2\right)}{1.3}\)
\(=\dfrac{4}{3}\)
\(d,\left(\dfrac{-12}{7}\right):\left(\dfrac{-31}{14}\right)\)
\(=\dfrac{-12}{7}.\dfrac{-14}{31}\)
\(=\dfrac{\left(-12\right).\left(-2\right)}{1.31}\)
\(=\dfrac{24}{31}\)
a. −2,5⋅(−325)=−52⋅−325=310
b. 114⋅−49=−119
c. −613:9−26=−613⋅−269=613⋅269=43
d. (−127):(−3114)=−127⋅−1431=127⋅1431=2431
