Najpierw odejmowanie w nawiasie:
[tex]3\cdot\left(4\dfrac{1}{9}-2\dfrac{7}{12}\right)=3\cdot\left(4\dfrac{4}{36}-2\dfrac{21}{36}\right)=3\cdot\left(3\dfrac{40}{36}-2\dfrac{21}{36}\right)=\\\\\\=3\cdot1\dfrac{19}{36}=3\!\!\!\!\diagup^1\cdot\dfrac{55}{36\!\!\!\!\!\diagup^{12}}=\dfrac{55}{12}=\boxed{4\dfrac{7}{12}}[/tex]
3x(4 1/9-2 7/12) = 3 (37/9-31/12 = 3 x 55/36 = 55/12 = 4 1/7
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Najpierw odejmowanie w nawiasie:
[tex]3\cdot\left(4\dfrac{1}{9}-2\dfrac{7}{12}\right)=3\cdot\left(4\dfrac{4}{36}-2\dfrac{21}{36}\right)=3\cdot\left(3\dfrac{40}{36}-2\dfrac{21}{36}\right)=\\\\\\=3\cdot1\dfrac{19}{36}=3\!\!\!\!\diagup^1\cdot\dfrac{55}{36\!\!\!\!\!\diagup^{12}}=\dfrac{55}{12}=\boxed{4\dfrac{7}{12}}[/tex]
3x(4 1/9-2 7/12) = 3 (37/9-31/12 = 3 x 55/36 = 55/12 = 4 1/7