Help with finding input values, step by step? Example given

Question

The function g is defined as follows:

g(t) = 6t - 1

 

What is the input value for which g(t) = -7?

t=

Answer 1

g(t) = 6t - 1              substittute -7 for g(x)

-7 = 6t - 1                 add 1 to both sides

-6 = 6t                     divide both sides by 6

-1 = t

 

g(-1) = -7