Perform the indicated operations.
75\displaystyle {7}-{5} = 77\displaystyle {7}-{7} = 7+5\displaystyle {7}+{5} =
5(7)\displaystyle {5}{\left({7}\right)} = 71\displaystyle {7}\cdot{1} = 0+5\displaystyle {0}+{5} =
70\displaystyle {7}-{0} = 55\displaystyle {5}\cdot{5} = 05\displaystyle {0}\cdot{5} =