Tìm x , biết:

a

\[3x - 32 = - 5\]

\[3x = - 5 + 32\]

\[3x = 27\]

\[x = 27:3\]

\[x = 9\]

b

\[{2^{2x - 3}} = 32\]

\[{2^{2x - 3}} = {2^5}\]

\[2x - 3 = 5\]

\[2x = 8\]

\[x = 4\]