me pueden ayudar y explicarlos??? ayudis!!!1-Casey ordered 4 pizzas .Each one was cut into 6 equal slices.Her father ate 3 slices. What fraction of the pizza was left? Write this fraction as a mixed number. 2-Tina cut 3 wood boards each into 4 equal pieces. She used 3 of the pieces for a craft. What fraction of the boards does she have left? Write the fraction as a mixed number. 3-What is an improper fraction???