a, (9x - \(2^3\)) : 5 = 2
<=> 9x - 8 = 10
<=> 9x = 10 + 8
<=> 9x = 18
<=> x = 2
b, [\(3^4\) - (\(8^2\) + 14) : 13]x = \(5^3\) + \(10^2\)
<=> [ 81- ( 64 + 14) : 13 ] x = 125+ 100
<=> ( 81- 78: 13 ) . x = 225
<=> ( 81- 6 ) . x = 225
<=> 75x = 225
<=> x = 3
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