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\left(2x+3\right)\left(2x-3\right)=\left(4x+1\right)\left(x-1\right)
Variable x cannot be equal to any of the values -\frac{3}{2},-\frac{1}{4} since division by zero is not defined. Multiply both sides of the equation by \left(2x+3\right)\left(4x+1\right), the least common multiple of 4x+1,2x+3.
\left(2x\right)^{2}-9=\left(4x+1\right)\left(x-1\right)
Consider \left(2x+3\right)\left(2x-3\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Square 3.
2^{2}x^{2}-9=\left(4x+1\right)\left(x-1\right)
Expand \left(2x\right)^{2}.
4x^{2}-9=\left(4x+1\right)\left(x-1\right)
Calculate 2 to the power of 2 and get 4.
4x^{2}-9=4x^{2}-3x-1
Use the distributive property to multiply 4x+1 by x-1 and combine like terms.
4x^{2}-9-4x^{2}=-3x-1
Subtract 4x^{2} from both sides.
-9=-3x-1
Combine 4x^{2} and -4x^{2} to get 0.
-3x-1=-9
Swap sides so that all variable terms are on the left hand side.
-3x=-9+1
Add 1 to both sides.
-3x=-8
Add -9 and 1 to get -8.
x=\frac{-8}{-3}
Divide both sides by -3.
x=\frac{8}{3}
Fraction \frac{-8}{-3} can be simplified to \frac{8}{3} by removing the negative sign from both the numerator and the denominator.