Help with this please​

1. Isolate the variable
Ex. 3n=12 Divide 3 on both sides. You get n=4
2. Inequality
Ex. 3x>x+7
3. Distributive Property
-10(x+5)=40
-10x-50=40

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?