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MathML		Picture
$\frac{5}{3}+\frac{7}{6}=\frac{10}{6}+\frac{7}{6}=\frac{17}{6}$ $\underset{\mathrm{<mi>k</mi>=1}}{\overset{5}{∑}}{(-1)}^{\mathrm{<mi>k</mi>+1}}\frac{x^{\mathrm{2<mi>k</mi>\; +\; 1}}}{(2<mi>k</mi>+1)!}$
The formula on the left side should be equal to the picture on the right side.
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