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a) \( -(+4)+(-2)+(-7-5)-(-1)-(-2-3)= \) b) \( -(+5)-(+10)+(-3)-(-4)+(+5)-(+2)= \) c) \( 5-[7-2-(1-9)-3+(4-7)-12]+4= \) d) \( 8-[6-(-3+7-1+4)-6]+4+5= \) e) \( 1+(-6+3+1)-[-2-(5-3+1)-2]= \) f) \( 7-\{4+2-20+[-5+3-(-15)+3]-1\}= \) g) \( \quad-2-3+1-[7+6+(4-5)-2]+1-3= \)

Ask by Moreno Hall. in Argentina
Mar 10,2025

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Answer

a) -12 b) -11 c) 14 d) 24 e) 6 f) 6 g) -16

Solution

**a)** Dado \[ -(+4) + (-2) + (-7-5) - (-1) - (-2-3) \] 1. \( -(+4) = -4 \). 2. \( -7-5 = -12 \). 3. \(-(-1)=+1\). 4. Dentro del último paréntesis: \(-2-3 = -5\) y, aplicando el signo exterior: \(-(-5)=+5\). Juntando: \[ -4 + (-2) + (-12) + 1 + 5 = -4-2-12+1+5 = -12. \] **b)** Dado \[ -(+5)-(+10)+(-3)-(-4)+(+5)-(+2) \] 1. \( -(+5)= -5 \). 2. \( -(+10) = -10 \). 3. \( +(-3) = -3 \). 4. \(-(-4)=+4\). 5. \(+(+5)=+5\). 6. \( -(+2)= -2 \). Sumando: \[ -5-10-3+4+5-2 = -11. \] **c)** Dado \[ 5-[7-2-(1-9)-3+(4-7)-12]+4 \] Primero resolvemos lo que está dentro del corchete: 1. \(7-2 = 5\). 2. \( (1-9) = -8 \) por lo que \(- (1-9) = +8\). 3. Sumamos: \(5+8=13\). 4. \(13-3=10\). 5. \(4-7 = -3\) y \(10+(-3)=7\). 6. Finalmente, \(7-12=-5\). Entonces la expresión se convierte en: \[ 5 - (-5) + 4 = 5+5+4 = 14. \] **d)** Dado \[ 8-[6-(-3+7-1+4)-6]+4+5 \] Primero, dentro del primer par de corchetes: 1. Resolvemos la suma en el paréntesis: \(-3+7-1+4\). \(-3+7=4\); \(4-1=3\); \(3+4=7\). 2. Entonces, se tiene: \(6-7= -1\); después, \(-1-6=-7\). La expresión queda: \[ 8 - (-7) + 4+5 = 8+7+4+5 = 24. \] **e)** Dado \[ 1+(-6+3+1)-[-2-(5-3+1)-2] \] 1. Resolver el primer paréntesis: \(-6+3+1 = -2\). Así, \(1+(-2)= -1\). 2. Dentro del corchete, resolvemos \(5-3+1 = 3\). Luego, \(-2-3= -5\) y \(-5-2= -7\). 3. Como el corchete está precedido de un signo negativo: \[ - [ -7] = +7. \] Finalmente, la suma: \[ -1 + 7 = 6. \] **f)** Dado \[ 7-\{4+2-20+[-5+3-(-15)+3]-1\} \] 1. Dentro del corchete interior: Resolvemos \(-5+3 = -2\). \(-(-15)= +15\) y entonces \(-2+15= 13\). Sumamos: \(13+3= 16\). 2. Sustituyendo en la llave: \[ 4+2-20+16-1. \] 3. Se resuelve: \(4+2=6\); \(6-20=-14\); \(-14+16= 2\); \(2-1=1\). 4. Finalmente: \[ 7-1=6. \] **g)** Dado \[ -2-3+1-[7+6+(4-5)-2]+1-3 \] 1. Dentro del corchete, resuelve: \(4-5 = -1\). Luego, \(7+6=13\); \(13 + (-1)=12\); \(12-2=10\). 2. La expresión se transforma en: \[ -2-3+1-10+1-3. \] 3. Sumando paso a paso: \(-2-3= -5\); \(-5+1= -4\); \(-4-10= -14\); \(-14+1= -13\); \(-13-3= -16\). Por lo tanto, las respuestas son: a) \(-12\) b) \(-11\) c) \(14\) d) \(24\) e) \(6\) f) \(6\) g) \(-16\)

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To solve these mathematical expressions, let's break them down step-by-step! First, for \( -(+4)+(-2)+(-7-5)-(-1)-(-2-3) \): 1. Calculate \( -7 - 5 = -12 \). 2. Then, \( -(-1) = 1 \), \( -(-2 - 3) = 5 \). 3. Combine everything: \( -4 - 2 - 12 + 1 + 5 = -12 \). Now for \( -(+5)-(+10)+(-3)-(-4)+(+5)-(+2) \): 1. Note that \( -(-4) = 4 \). 2. So, the expression simplifies to \( -5 - 10 - 3 + 4 + 5 - 2 \). 3. Combine: \( -5 - 10 - 3 + 4 + 5 - 2 = -11 \). Next, consider \( 5-[7-2-(1-9)-3+(4-7)-12]+4 \): 1. Simplifying inside the brackets first gives \( 7 - 2 + 8 - 3 - 3 - 12 = -5 \). 2. The expression becomes \( 5 - (-5) + 4 = 5 + 5 + 4 = 14 \). Moving to \( 8-[6-(-3+7-1+4)-6]+4+5 \): 1. Calculate the inside: \( -3 + 7 - 1 + 4 = 7 \). 2. Then, \( 6 - 7 - 6 = -7 \). 3. Thus, \( 8 - (-7) + 4 + 5 = 8 + 7 + 4 + 5 = 24 \). Next, for \( 1+(-6+3+1)-[-2-(5-3+1)-2] \): 1. First, simplify the inner part: \( -6 + 3 + 1 = -2 \) and for the bracket \( -2 - (5 - 3 + 1) - 2 = -2 - 3 = -5 \). 2. Ultimately, \( 1 - (-2) + 5 = 1 + 2 + 5 = 8 \). Now for \( 7-\{4+2-20+[-5+3-(-15)+3]-1\} \): 1. Simplify the innermost expression first: \( -5 + 3 + 15 + 3 = 16 \). 2. Then the next layer: \( 4 + 2 - 20 + 16 - 1 = 1 \). 3. Finally, \( 7 - 1 = 6 \). Lastly, for \( -2-3+1-[7+6+(4-5)-2]+1-3 \): 1. Calculate inside the brackets: \( 7 + 6 - 1 - 2 = 10 \), leading to \( -2 - 3 + 1 - 10 + 1 - 3 = -16 \). So, the final answers are: a) -12 b) -11 c) 14 d) 24 e) 8 f) 6 g) -16

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