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Rodion Sychev · Answer 1 · 2023-05-26T17:25:22+0000

EXPLANATION.

First we must multiply 9 by 3 to know in the three nights, how much she knitted and then we add them to the 28 she had already knitted.

$\begin{gathered} 9\text{ }*3=27cm(\text{ }has\text{ knitted in thre}e\text{ nights)} \\ \text{Now we must }add\text{ tha}t\text{ value }to\text{ 28 cm} \\ 28\operatorname{cm}+27\operatorname{cm} \\ 55\operatorname{cm}\text{ } \\ \text{ANSWER:In }total\text{ she has }knitted\text{ 55cm} \end{gathered}$

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