Final Answer:
c. 1 whole pizza and 15/42 pieces
Step-by-step explanation:
After cutting the first pizza into 6 pieces and eating 2, you have 4 pieces remaining. The second pizza, cut into 7 pieces with your friend eating 2, leaves 5 pieces. Combining the remaining pieces from both pizzas gives a total of 9 pieces.
Now, since each pizza was originally a whole pizza, and we are dealing with the total number of pieces out of 14 (6 from the first pizza + 7 from the second), we can express this as 9/14. To simplify the fraction, we multiply both the numerator and denominator by 2, resulting in 18/28. Further simplifying by dividing both by the greatest common factor, which is 2, we get 9/14.
Therefore, you have 9/14 of the total pizza, and since 14 pieces make up a whole pizza, this is equivalent to having 9/14 * 1 = 9/14 of one whole pizza. To express this as a mixed number, we divide 9 by 14, which gives 0 with a remainder of 9. So, the final answer is 1 whole pizza and 9/14 pieces. To simplify further, we can express 9/14 as 18/28 and then simplify it to 9/14. Therefore, you have 1 whole pizza and 9/14 pieces, which can be expressed as 1 whole pizza and 15/42 pieces.