Question

questão 21 calcule 1/3+7/9-5/6?
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Answer 1

Olá !

Conforme sugere o enunciado , resolverei a expressão .

$\mathsf{\dfrac{1}{3}+\dfrac{7}{9}-\dfrac{5}{6}} \\\\\\ \mathsf{=\dfrac{(9+21)}{27}-\dfrac{5}{6}} \\\\\\ \mathsf{=\dfrac{30}{27}-\dfrac{5}{6}} \\\\\\ \mathsf{=\dfrac{(180-135)}{162}} \\\\\\ \mathsf{=\dfrac{45}{162}} \\\\\\ \mathsf{=\dfrac{15}{54}} \\\\\\ \boxed{\mathsf{=\dfrac{5}{18}}}$

Portanto , o resultado é $\boxed{\mathsf{\dfrac{5}{18}}}$

Espero ter colaborado !!