Subtract. Write the difference in simplest form. (5n - 3) - (-2n + 7) 7n - 10 3n + 4 3n - 10 7n + 4Which of the following expressions is equivalent to 18m - 12?-3(-6m - 4)2(-9m + 6)-1(18m + 12)6(3m - 2)Which of the following expressions is in its simplest form?8m + 4n - 5mn + 715bd + 5 - 2b + 3d + 23xy + 6xy2 - 7 + 12xy35 - a2 - ab2 + ab - 2ab2Four friends are going to split the cost of a pizza. If p stands for the cost of the pizza, which of the following expressions could represent what each friend will pay?4pp - 4pp/4Tommy and his family drove home from his grandparent's house in three and a half hours. If they drove at an average rate of 48 miles per hour, which of the following formulas could be used to find how far away Tommy lives from his grandparents?d = rtt = d/rr = d/tTommy and his family drove home from his grandparent's house in three and a half hours. If they drove at an average rate of 48 miles per hour, about how far away does Tommy live from his grandparents?144 miles192 miles168 miles180 miles