Cuál es el resultado de -4/5 - (-3) -2/3? -4/5 - (-3) -2/3
-4/5 + 3 -2/3 (3×3=9-2=7)
-4/5 + 7/3 = -12/5

Lo que pido es que me expliquen como salió la última parte del ejercició la que esta antes de la respuesta final. Se los agradecería mucho si se toman ese tiempo de explícarmelo !gracias por su atención!​

Nthe opening scene of the movie raiders of the lost ark, indiana jones replaces a golden statue with a bag of sand. the platform on which the statue is placed is designed to detect the mass of the statue. if the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues. the density of gold is about 20\text{ g/cm}^320 g/cm 3 20, space, g, slash, c, m, start superscript, 3, end superscript. the density of sand can be estimated at 2.5\text{ g/cm}^32.5 g/cm 3 2, point, 5, space, g, slash, c, m, start superscript, 3, end superscript. the gold statue can be modeled as a cylinder with height 25\text{ cm}25 cm25, space, c, m and radius 8\text{ cm}8 cm8, space, c, m. in terms of \piπpi, what is the mass of sand indiana jones needs to avoid triggering the mechanism?