Number pattern has 75 as its first term. The rule for the pattern is subtract 6. What is the sixth term

Since you subtract 6 and you have to find the sixth term, you can do:

-6*5=-30 (negative shows you're subtracting and since 75 is the first term, then you have to find the difference of the input/term 6-1, the sixth term minus the first)

75-30=45

You can check by actually continuing the pattern.

75,69,63,57,51,45,39 ...