3,6-(1/4×3,6)-1 1/2=
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[tex]3.6 - ( \frac{1}{4} \times 3.6) - 1 \frac{1}{2} \\ \\ = \frac{36}{10} - ( \frac{1}{4} \times \frac{36}{10} ) - \frac{3}{2} \\ \\ = \frac{18}{5} - ( \frac{1}{1} \times \frac{9}{10} ) - \frac{3}{2} \\ \\ = \frac{18}{5} - \frac{9}{10} - \frac{3}{2} \\ \\ = \frac{36 - 9 + 15}{10} = \frac{30}{10} = 3[/tex]
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