Equations with two rational expressions

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Problem

start fraction, 9, z, plus, 36, divided by, z, plus, 4, end fraction, equals, start fraction, 6, divided by, z, minus, 9, end fraction, plus, 3
Fill in the blanks with the solution(s) of the equation.
If there are two such solutions, enter them in ascending order.
If there is only one such solution, leave the second blank empty.
If there are zero such solutions, leave both blanks empty.
z, equals
z, equals