Question

4- Calcule as expressões numéricas:5/9 - ( -1/2 + 5/6) + (-2/3 + 1) =

Answer 1

Resposta:

OLÁ VAMOS A SUA PERGUNTA:⇒⇒

$\dfrac{ 5 }{ 9 } -(- \dfrac{ 1 }{ 2 } + \dfrac{ 5 }{ 6 } )+(- \dfrac{ 2 }{ 3 } +1)$

$\dfrac{5}{9}-\left(-\dfrac{3}{6}+\dfrac{5}{6}\right)-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{5}{9}-\dfrac{-3+5}{6}-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{5}{9}-\dfrac{2}{6}-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{5}{9}-\dfrac{1}{3}-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{5}{9}-\dfrac{3}{9}-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{5-3}{9}-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{2}{9}-\dfrac{2}{3}+1\approx 0.555555556$

$\dfrac{2}{9}-\dfrac{6}{9}+1\approx 0.555555556$

$\dfrac{2-6}{9}+1\approx 0.555555556$

$-\dfrac{4}{9}+1\approx 0.555555556$

$-\dfrac{4}{9}+\dfrac{9}{9}\approx 0.555555556$

$\dfrac{-4+9}{9}\approx 0.555555556$

$\star \: \text{Some -4 e 9 para obter 5.}$

$\color{green}{}\boxed{\bold{\displaystyle{\clubsuit\ \spadesuit\ \maltese \:\frac{5}{9}\approx 0.555555556   }}}\ \checkmark$

Answer 2

Oie, Td Bom?!

= 5/9 - (- 1/2 + 5/6) + (- 2/3 + 1)

= 5/9 - (- 3/6 + 5/6) + (- 2/3 + 3/3)

= 5/9 + [- 3 + 5]/6 + [- 2 + 3]/3

= 5/9 + 2/6 + 1/3

= 5/9 - 1/3 + 1/3

= 5/9

≈ 0,555...

Att. Makaveli1996