Question

{1/5 + [ - 3/8 (-3/4 + 6/2)]}
1/2- [2/5(9/3-2/5)]
{-2/5 + [3/5(4/5-5/5)] – 9/5}

ayudaaaaa

Answer 1

Explicación paso a paso:

1. {1/5 + [ - 3/8 (-3/4 + 6/2)]}

{1/5 + [ - 3/8 (-3/4 + (2/2)(6/2)]}

{1/5 + [ - 3/8 (-3/4 + 12/4)]}

{1/5 + [ - 3/8 (12 - 3)/4]}

{1/5 + [ - 3/8 (9/4)]}

{1/5 + [ (-3×9)/(8×4)]}

{1/5 + [ -27/32]}

{1/5 - 27/32}

{(1×32) - (27×5)}/32

{32 - 135}/32

-103/32 Rpta

2. 1/2- [2/5(9/3-2/5)]

1/2- [2/5((9×5)-(3×2))/(3×5)]

1/2- [2/5(45 - 32)/15]

1/2- [2/5(13)/15]

1/2- [(2×13)/5×15]

1/2- [26/75]

[(1×75) - (2×26)]/(2×75)

[75 - 52]/150

23/150 Rpta

3. {-2/5 + [3/5(4/5-5/5)] – 9/5}

{-2/5 + [3/5(-1/5)] – 9/5}

{-2/5 + [(3×-1)/(5×5)] – 9/5}

{-2/5 + [-3/25] – 9/5}

{-2/5 - 3/25 – 9/5}

- 11/5 - 3/25

(5/5)(-11/5) - 3/25

-55/25 - 3/25

-58/25 Rpta