2. Resolver trabajando con fracciones: \[ \begin{array}{l}\left(\frac{2}{5}+\frac{3}{10}\right) \cdot \frac{5}{14}-\frac{3}{4}= \\ -\frac{1}{9}:\left(\frac{2}{3}+\frac{1}{6}\right)+\left(-1+\frac{3}{5}\right)= \\ {\left[\left(-\frac{5}{6}\right): \frac{3}{4}+1\right] \cdot \frac{9}{8}=} \\ -\frac{7}{2}: \frac{5}{3}-\frac{3}{5}:\left(-\frac{3}{4}\right)+\frac{3}{10}=\end{array} \]

13. What multiple of 7 is also a factor of 7 ?

4. Ariell has 36 chemistry books, 32 biology books and 28 physics books. She wishes to arrange the books in groups such that each group has the same number of each book without any book being lof out. Calculate the maximum number of books that can be found in each group. (3 marks)

Serena has several packages of raisins. Each package contains 3 boxes of raisins. Which could be the number of boxes of raisins Serena has? Mark all that apply.

Till bålet blandar Sverker \( \frac{1}{3} \) liter flädersaft med \( \frac{3}{4} \) liter fruktsoda. Hur många liter blir Sverkers bål?

5) Convert 0.75 into a fraction and percentage. A. \( 3 / 4,75 \% \) B. \( 7 / 10,70 \% \) C. \( 2 / 3,75 \% \) D. \( 3 / 2,50 \% \)