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Multiply & divide rational expressions

Daniela and Ella were each asked to perform the following operation:
6z1510z(z1)÷5z+53z2\dfrac{6z-15}{10z(z-1)}\div\dfrac{-5z+5}{3z^2}
Their responses are shown below.
DanielaElla
9z(2z5)50(z1)2-\dfrac{9z(2z-5)}{50(z-1)^2}(2z5)2z3-\dfrac{(2z-5)}{2z^3}
Are either of these students correct?
Choose 1 answer:
Choose 1 answer: