Question

3) Calcule com números racionais na forma fracionária:

c) (+ 1/3 ) : (− 5/6 ) =
d) (− 12/7 ) : (− 4/21) =​

Answer 1

Resposta:

c) (1/3) / (-5/6) =

= 1/3 . (-6/5)

= (-6/15) => -2/5

d) (−12/7) / (−4/21) =​

= (-12/7) . (-21/4)

= 252/ 28 => 63/7 ≡ 9/1

Answer 2

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C)

1/3 ÷ (-5/6)

1/3 × 6/-5

6/-15

2/-5

R) 2/-5

_

D)

(-12/7) ÷ (-4/21)

(-12/7) × (21 /-4)

-252/28

-63/7

-9

R) -9

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Att: MarcosPCV