Números racionales Matemáticas Fundamentales
Enviado por Stella • 4 de Diciembre de 2018 • 1.074 Palabras (5 Páginas) • 311 Visitas
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(-5) * ( -12) / [(+5) * (+2)] =
-5 * -12 / [+5 * +2]
-5 * -12 / +5 * +2
+60 / +10
= 6
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Nivel III
Ejercicio 22
-30 + 18 - (-7) + 1 – 5 - (-6) +(-7) =
-30 + 18 + 7 + 1 – 5 + 6 – 7
18 + 7 + 1 + 6 – 30 – 5 – 7
32 – 42
= -10
Ejercicio 23
-4 + (-6 + 1) +3 - [3- (1-2) + 2] + 1 -7
-4 +( -5) +3 - [3 - (-1) + 2] +1 -7
-4 –5 +3 –[3 +1+2] +1 -7
-4 -5 +3 - [+6]+1 -7
-4 -5 +3 -6 +1 -7
4 -22
= -18
Ejercicio 24
-17 + (-7) – (-5) + (-10) – (+2) +4 – 57
-17 – 7 + 5- 10 + 2 + 4 – 57
5 + 2 + 4 – 17 – 7 – 10 – 57
11 – 91
= -80
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Ejercicio 25
3 – [ - 2 + 11 - (4 – 15 - 7)] – 2 + [ - 3 - (5 - 26 -1) + 2]
3 – [ - 2 + 11 -( -18)] - 2 + [ - 3 –( -22) + 2]
3 - [ -2 + 11 + 18] -2 + [ -3 + 22 +2]
3 –[27] -2 + [21]
3 -27 -2 +21
24 – 29
= - 5
Ejercicio 26
- 8 + (-13) – (-21) – 6 + 3
- 8 - 13 + 21 - 6 + 3
21 + 3 -8 -13 – 6
24 – 27
= - 3
Ejercicio 27
(- 4 – 8) + (-9 – 5) – ( -9 + 21) – (7 – 5)
(-12) + (-14) –(12) –(+2)
-12 -14 -12 -2
= - 40
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Ejercicio 28
- [13 + (-4)] – (-12) – 2 + 4 – (-1)
- [13 – 4] + 12 – 2 + 4 + 1
- [ 9] + 12 – 2 + 4 + 1
-9 +12 -2 +4 +1
17 – 11
= 6
Ejercicio 29
5 + [3 – (12 + 4 – 1) + 16] – 11 – (2 + 7)
5 + [3 – (15) + 16] – 11 – (9)
5 + [3 – 15 + 16] – 11 – 9
5 + [4] – 11 – 9
5 + 4 – 11 – 9
9 – 20
= -11
Ejercicio 30
- 4 (4 -2 + 5) -1 - {1 - [8 + (-3 - 1) - (-7 + 4)] + 3 - 4}
-4 (7) -1 - {1 - [8 + (-4) - (-3)] + 3 - 4}
-28 -1 - {1 - [8 -4 + 3] + 3 -4}
-28 – 1 – {1 – [7] + 3 – 4}
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-28 – 1 – {1 – 7 + 3 – 4}
-28 – 1 – {-7}
-28 – 1 + 7
7 -29
= - 22
Ejercicio 31
10 – [- 2 + (-3 – 4 – 1) + 1 – (- 4 - 2 + 3 – 1) – 4] =
10 – [- 2 + (-8) + 1 – (-4) – 4]
10 – [- 2 – 8 + 1 + 4 – 4]
10 – [5 -14]
10 - [- 9]
10 +9
= 19
Ejercicio 32
(-5 + 3) – {1 – [7 – (8 + 12 – 4) – 7] – 35 + (4 + 18 – 15)} =
(-2) – {1 –[7 – (16) – 7] – 35 + (7)}
-2 – {1 – [7 – 16 – 7] – 35 + 7}
-2 – {1- [-16] – 35 + 7}
-2 – {1 + 16 – 35 + 7}
-2 – {24 -35}
-2 – {-11}
-2 + 11
= 9
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Ejercicio 33
- (9 – 5 + 12) + {- 7 + [14 – 9 + (2 – 1) + 17]}- 3
- (16) + {- 7 + [14 – 9 +(1) + 17]} – 3
-16 + {- 7 + [14 – 9 + 1 + 17]} – 3
-16 + {- 7 + [23]} – 3
-16 + {- 7 + 23} – 3
-16
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