Question

1) Calcule a diferença enre o triplo de - 7/10 e o cubo de - 1/2.

Alguém me ajuda?!!

Quero com cálculos pliss​

Answer 1

Resposta:

-79/40

Explicação passo-a-passo:

$3(-\frac{7}{10} ) - (-\frac{1}{2})^{3}$

$\frac{3}{1} . \frac{-7}{10} = \frac{-21}{10}$

$(\frac{-1}{2} )^{3} = (\frac{-1}{8}) = \frac{-1}{8}$

$\frac{-21}{10} - (\frac{-1}{8}) = \frac{-21}{10} + \frac{1}{8}$

MMC de 10 e 8

10, 8 | 2

5, 4   | 2

5, 2   | 2

5, 1    | 5

1, 1

2 . 2 . 2 . 5 = 40

$\frac{-84 + 5}{40} = \frac{-79}{40}$

Answer 2

Oie, Td Bom?!

$= 3 \: . \: ( - \frac{7}{10} ) - ( - \frac{1}{2} ) {}^{3}$

$= - 3 \: . \: \frac{7}{10} - ( - \frac{1}{2} ) {}^{3}$

$= - \frac{21}{10} - ( - \frac{1}{2} ) {}^{3}$

$= - \frac{21}{10} - ( - \frac{1}{8} )$

$= - \frac{21}{10} + \frac{1}{8}$ ⇐ MMC (40).

$= \frac{ - 84 + 5}{40}$

$= \frac{ - 79}{40}$

$= - \frac{79}{40}$

Att. Makaveli1996