Hello I'm a newbie. I need help with my homework. I have ADD bad. I don't understand this section Could someone please show how to work these problems?

In Ex. 1-8, determine whether each x-value is a solution of the equation.

3. 3e^x+2=75

(b) -2 + ln25

(c) x approx 1.2189

7. ln(x-1)=3.8

(b) x approx 45.7012

(c) x=1 + ln 3.8