-11/15.20/23+-11//15.3/23+-34/15
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-11/15.20/23+-11/15.3/23+-34/15
\(=\frac{-11}{15}\left(\frac{20}{23}+\frac{3}{23}\right)+\frac{-34}{15}\)
\(=\frac{-11}{15}.1+\frac{-34}{15}\)
\(=\frac{-45}{15}=-3\)
\(\frac{-11}{15}.\frac{20}{23}+\frac{-11}{15}.\frac{3}{23}+\frac{-34}{15}\)
\(=\frac{-11}{15}.\left(\frac{20}{23}+\frac{3}{23}\right)+\frac{-34}{15}\)
\(=\frac{-11}{15}.1+\frac{-34}{15}\)
\(=\frac{-11+\left(-34\right)}{15}\)
\(=\frac{-45}{15}\)
\(=-3\)
Study well ! >_<
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\(\dfrac{11}{34}+\dfrac{5}{23}+\dfrac{23}{34}+\dfrac{18}{23}\)
\(=\left(\dfrac{11}{34}+\dfrac{23}{34}\right)+\left(\dfrac{5}{23}+\dfrac{18}{23}\right)\)
\(=1+1\)
\(=2\)
#DatNe
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