Matemática, perguntado por luanamelo41, 4 meses atrás

Valor dos números racionais -3/5+8/7

Soluções para a tarefa

Respondido por attard
1

\Large\mathsf\displaystyle{} -  \dfrac{3}{5}  +  \dfrac{8}{7}  \\\\ \Large\mathsf\displaystyle{} -  \frac{3\cdot7}{5\cdot7}  +  \dfrac{8\cdot5}{7\cdot5}  \\  \\ \Large\mathsf\displaystyle{} -  \dfrac{21}{35}  +  \dfrac{40}{35}  \\\\ \Large\mathsf\displaystyle{} \dfrac{ - 21 + 40}{35}  \\\\ \Large\mathsf\displaystyle{}\Large\displaystyle\text{$\begin{gathered} \underline{\boxed{\boldsymbol{  \dfrac{19}{35}  }}}\end{gathered}$}

\displaystyle\text{$\begin{gathered} \underline{\boxed{\boldsymbol{{ \red{Bons}}  \blue{\:Estudos}}}}\end{gathered}$}

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