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5=72\left(2x+1\right)
Variable x cannot be equal to -\frac{1}{2} since division by zero is not defined. Multiply both sides of the equation by 2\left(2x+1\right).
5=144x+72
Use the distributive property to multiply 72 by 2x+1.
144x+72=5
Swap sides so that all variable terms are on the left hand side.
144x=5-72
Subtract 72 from both sides.
144x=-67
Subtract 72 from 5 to get -67.
x=\frac{-67}{144}
Divide both sides by 144.
x=-\frac{67}{144}
Fraction \frac{-67}{144} can be rewritten as -\frac{67}{144} by extracting the negative sign.