4.3.5 Example 5 (Unequal Base – put log both side)

Example 5
Solve each of the following.
(a)

3^{x + 1} = 7

(b)

2 (3^{x}) = 5

(c)

2^{x} {.3}^{x} = 9^{x - 4}

(d)

5^{x - 1} {.3}^{x + 2} = 10