34. Resuelve las ecuaciones de la pizarra.
a) 2. (x + 1) = 10 - (1 - 3x)
b) 2 · (5x + 4) = 5. (x + 2)
c) 5. (7 - 2x) = 6 . (4x + 3)
d) 3. (x + 3) = -2(3x - 6)
e) 5•(6 - 2x) = -6.(x - 4)
Respuestas a la pregunta
Respuesta:
Explicación paso a paso:
a) 2. (x + 1) = 10 - (1 - 3x)
2x + 2 = 10 - 1 + 3x
2x - 3x = 9 - 2
-x = 7
x= -7
b) 2 · (5x + 4) = 5. (x + 2)
10x + 8 = 5x + 10
10x - 5x = 10 - 8
5x = 2
x= 2/5
c) 5. (7 - 2x) = 6 . (4x + 3)
35 - 10x = 24x + 18
-10x - 24x = 18 - 35
- 34x = - 17
x= -17/ -34
x= 1/2
d) 3. (x + 3) = -2(3x - 6)
3x + 9 = -6x + 12
3x + 6x = 12 - 9
9x = 3
x= 3/9
x= 1/3
e) 5•(6 - 2x) = -6.(x - 4)
30 - 10x = -6x + 24
-10x + 6x = 24 - 30
-4x = -6
x= -6/-4
x= 3/2
Respuesta:
a) 2. (x + 1) = 10 - (1 - 3x)
2x + 2 = 10 - 1 + 3x
2x - 3x = 9 - 2
-x = 7
x= -7
b) 2 · (5x + 4) = 5. (x + 2)
10x + 8 = 5x + 10
10x - 5x = 10 - 8
5x = 2
x= 2/5
c) 5. (7 - 2x) = 6 . (4x + 3)
35 - 10x = 24x + 18
-10x - 24x = 18 - 35
- 34x = - 17
x= -17/ -34
x= 1/2
d) 3. (x + 3) = -2(3x - 6)
3x + 9 = -6x + 12
3x + 6x = 12 - 9
9x = 3
x= 3/9
x= 1/3
e) 5•(6 - 2x) = -6.(x - 4)
30 - 10x = -6x + 24
-10x + 6x = 24 - 30
-4x = -6
x= -6/-4
x= 3/2
Espero que te sirva