Question

Operaciones combinadas:
-5 – [-17 + (15 -6)] + (-15 - 8) – {-1 + (8 - 9)+ (7 - 10)}

Answer 1

a)

= -5 - [-17 + (15 - 6)] + (-15 - 8) - {-1 + (8 - 9) + (7 - 10)}

= -5 - [-17 + 9] + (-23) - {-1 + (-1) + (-3)}

= -5 - [-8] + (-23) - {-1 + (-1) + (-3)}

= -5 + 8 - 23 - {-1 - 1 - 3}

= - 20 - (- 5)

= - 20 + 5

= - 15

b)

= -13 – {-4 + [9 + (-5 - 6 + 12) + (-2)] - 5}

= -13 – {-4 + [9 + (1) - 2] - 5}

= -13 – {-4 + [9 + 1 - 2)] - 5}

= -13 – {-4 + 8 - 5}

= -13 – { 4 - 5}

= -13 – { 4 - 5}

= -13 - (-1)

= - 13 + 1

= - 12

c)

= -15 + {-3 – [8 – 4 + (6 - 1)] + 12 - [6 - (5 - 11)]}

= -15 + {-3 – [8 – 4 + (5)] + 12 - [6 - (-6)]}

= -15 + {-3 – [9] + 12 - [6 + 6]}

= -15 + {-3 – 9 + 12 - 12}

= -15 + {-12}

= -15 - 12

= -27

d)

= -14 – {-9 – [15 – (16 + 31)] – [-12 + (-8 - 7)]}

= -14 – {-9 – [15 – (47)] – [-12 + (-15)]}

= -14 – {-9 – [- 32] – [-12 - 15]}

= -14 – {-9 + 32 – [-27]}

= -14 – {-9 + 32 + 27}

= -14 – {50}

= -14 - 50

= -64

e)

= –{4 – 15 – [7 – (3 – 2 - 6) - 8] – [-3 – (7 - 5)]}

= –{4 – 15 – [7 – (-5) - 8] – [-3 – (2)]}

= –{4 – 15 – [7 + 5 - 8] – [-3 – 2]}

= –{4 – 15 – [4] – [-5]}

= –{4 – 15 – 4 + 5}

= –{– 10}

= 10