Question

-2 mũ  3 x -1/24 + 4/5 - 1,2 chia 2/15

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Answer 1

\(\left(-2\right)^3\times-\dfrac{1}{24}+\dfrac{4}{5}-1,2:\dfrac{2}{15}\)

\(=-8\times-\dfrac{1}{24}+\dfrac{4}{5}-\dfrac{6}{5}:\dfrac{2}{15}\)

\(=\dfrac{1}{3}+\dfrac{4}{5}-9\)

\(=-\dfrac{118}{15}\)

Answer 2

`-2^3 xx (-1/24)+4/5-1,2 : 2/15`

`=2^3 xx 1/24 +4/5 -6/5 : 2/15`

`=8/24 +4/5 -6/5 xx 15/2`

`=1/3+4/5 -9`

`=5/15 +12/15 -135/15`

`=-118/15`

 

Answer 3

\(\left(-2\right)^3\times\dfrac{-1}{24}=\dfrac{4}{5}-1,2:\dfrac{2}{15}\)

\(=\left(-8\right)\times\dfrac{-1}{24}+\dfrac{4}{5}-1,2:\dfrac{2}{15}\)

\(=\dfrac{1}{3}+\dfrac{4}{5}-1,2\times\dfrac{15}{2}\)

\(=\dfrac{1}{3}+\dfrac{4}{5}-9\)

\(=\dfrac{5}{15}+\dfrac{12}{15}-\dfrac{135}{15}\)

\(=\dfrac{5+12-135}{15}\)

\(=-\dfrac{118}{15}\)