Answer:
50-6= 54
54÷4= 13.5
editing for clarity.
first you subtract the 6 from the 50 to find out what the "4 times a number" came to.
in this case, 50-6, which equals 54.
then, you divide the 54 by 4 to get 13.5.
so, the whole math problem would be
4 times 13.5 plus 6 equals 50.