Zimmerman Owen
07/15/2023 · Middle School
3. Aplica propiedad A. \( 7(x-5)-x=3 \) B. \( -3(2 x-5)-5 x=3 \) C. \( 7(x-2)-6 x+1=3- \) D. \( 4 x+2(2 x-5=(x-5) \) E. \( 9 x-2(x-4 x)=3 x-2 \)
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Vamos a resolver cada una de las ecuaciones aplicando propiedades algebraicas.
### A. \( 7(x-5)-x=3 \)
1. Distribuimos \( 7 \) en \( 7(x-5) \):
\[
7x - 35 - x = 3
\]
2. Combinamos términos semejantes:
\[
6x - 35 = 3
\]
3. Sumamos \( 35 \) a ambos lados:
\[
6x = 38
\]
4. Dividimos entre \( 6 \):
\[
x = \frac{38}{6} = \frac{19}{3}
\]
### B. \( -3(2x-5)-5x=3 \)
1. Distribuimos \( -3 \):
\[
-6x + 15 - 5x = 3
\]
2. Combinamos términos semejantes:
\[
-11x + 15 = 3
\]
3. Restamos \( 15 \) a ambos lados:
\[
-11x = -12
\]
4. Dividimos entre \( -11 \):
\[
x = \frac{12}{11}
\]
### C. \( 7(x-2)-6x+1=3 \)
1. Distribuimos \( 7 \):
\[
7x - 14 - 6x + 1 = 3
\]
2. Combinamos términos semejantes:
\[
x - 13 = 3
\]
3. Sumamos \( 13 \) a ambos lados:
\[
x = 16
\]
### D. \( 4x + 2(2x-5) = (x-5) \)
1. Distribuimos \( 2 \):
\[
4x + 4x - 10 = x - 5
\]
2. Combinamos términos semejantes:
\[
8x - 10 = x - 5
\]
3. Restamos \( x \) a ambos lados:
\[
7x - 10 = -5
\]
4. Sumamos \( 10 \) a ambos lados:
\[
7x = 5
\]
5. Dividimos entre \( 7 \):
\[
x = \frac{5}{7}
\]
### E. \( 9x - 2(x - 4x) = 3x - 2 \)
1. Simplificamos \( -2(x - 4x) \):
\[
9x - 2(-3x) = 3x - 2
\]
\[
9x + 6x = 3x - 2
\]
2. Combinamos términos semejantes:
\[
15x = 3x - 2
\]
3. Restamos \( 3x \) a ambos lados:
\[
12x = -2
\]
4. Dividimos entre \( 12 \):
\[
x = -\frac{1}{6}
\]
### Resumen de soluciones:
- A: \( x = \frac{19}{3} \)
- B: \( x = \frac{12}{11} \)
- C: \( x = 16 \)
- D: \( x = \frac{5}{7} \)
- E: \( x = -\frac{1}{6} \)
Quick Answer
A: \( x = \frac{19}{3} \)
B: \( x = \frac{12}{11} \)
C: \( x = 16 \)
D: \( x = \frac{5}{7} \)
E: \( x = -\frac{1}{6} \)
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