Respuesta:
A)
2x - (x + 5) = -3x -9
2x - x - 5 = -3x - 9
x + 3x = -9 + 5
4x = -4
x = -4/4
x = -1
B)
(-2).(x - 1) - 2x + 3 = (1).(-x + 7 - (6 - x)
)
-2x + 2 - 2x + 3 = 1(-x + 7 - 6 + x)
-4x + 5 = 1(1)
-4x = 1 - 5
-4x = -4
x = -4/-4
x = 1
C)
(1).(2x+4(-3x-2))=x-17
1(2x - 12x - 8) = x - 17
-10x - 8 = x - 17
-10x - x = -17 + 8
-11x = -9
x = -9/-11
x = 9/11
Explicación paso a paso:
