POR FAVOR CON PROCEDIMIENTO DOY CORONITA
A) 2(7x + 4) = 8(2x + 3)
B) 7(2x-3) + 10 = 17
C) 2(3x-7) + 5(x+3) = 23
D) 11(2x-7) + 2(5x-4) – 3(2x-5) = -18
E) 2x + 4 – 5 = 3(x-7)
Respuestas
Respuesta:
A) x = -8
B) x = 2
C) x = 2
D) x = 2
E) x = 20
Explicación paso a paso:
A)
2(7x + 4) = 8(2x + 3)
14x + 8 = 16x + 24
-2x = 16
x = 16/(-2)
x = -8
B)
7(2x-3) + 10 = 17
14x - 21 + 10 = 17
14x - 11 = 17
14x = 28
x = 2
C)
2(3x-7) + 5(x+3) = 23
6x - 14 + 5x + 15 = 23
11x + 1 = 23
11x = 22
x = 2
D)
11(2x-7) + 2(5x-4) – 3(2x-5) = -18
22x - 77 + 10x - 8 - 6x + 15 = -18
26x - 70 = -18
26x = 52
x = 2
E)
2x + 4 – 5 = 3(x-7)
2x - 1 = 3x - 21
-1x = -20
x = (-20)/(-1)
x = 20
Respuesta:
A)
14 x + 8 = 16 x + 24
14 x -16 x = 24 - 8
-2 x = 16
x = 16 / -2
x = 8
B)
14 x -21 + 10 = 17
14 x -11 = 17
14 x = 28
x = 2
C)
6x - 14 + 5 x + 15 = 23
11x + 1 = 23
11 x = 22
x = 2
D)
22 x -77 + 10 x - 8 - 6x + 15 = - 18
32 x -70 = -18
32 x = -18 + 70
32 x =52
x = 52 / 32
simplificando x = 13 / 8
E)
2x + 4 - 5 = 3x - 21
2x - 3 x = -21 + 1
- x = -20
multiplicamos por menos uno para cambiar la negatividad del resultado
x = 20