Help me with these equations

Help me with these equations?
equations with fractions. The symbol "/" is assumed to be a fraction

(3/2 x + 1/3)³ -1 = 37/27
3/4 . fourth root "X" + (3/2)² = 5/2
-2/3 . (X² + 1/2)² = - 3/8

Please help me D:

(3x/2 + 1/3)³ = 64/27

=> 3x/2 + 1/3 = 4/3

=> 3x/2 = 1

i.e. x = 2/3

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(3/4)(₄√x) = 5/2 - 9/4 = 1/4

=> ₄√x = 1/3

i.e. x = (1/3)⁴ = 1/81

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(x² + 1/2)² = 9/16

=> x² + 1/2 = 3/4

=> x² = 1/4

i.e. x = ±1/2

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