resuelve las siguientes ecuaciones: a- 2x - 6 =8 b- x-8=6-21 c- 5+x=2x+1 d- 5x-2=3x-16 e- 4+3x-2(x-1)=2 f- 2(1-2x)+3(3x-2)=x-1
A) 2x - 6 = 8
2x = 8 + 6
2x = 14
x= 14/2
x = 7......R/.
B) x - 8 = 6 - 21
x = 6 - 21 + 8
x = -7......R/.
C) 5 + x = 2x + 1
x - 2x = 1 - 5
-x = -4
x= -4 / -1
x = 4......R/.
D) 5x - 2 = 3x -16
5x - 3x = -16 + 2
2x = -14
x = -14 / 2
x = -7.....R/.
E) 4 + 3x - 2(x - 1) = 2
4 + 3x -2x + 2 = 2
6 + x = 2
x = 2 - 6
x = -4.....R/.
F) 2(1 - 2x) + 3(3x - 2) = x - 1
2 - 4x + 9x - 6 = x - 1
-4 + 5x = x - 1
5x - x = -1 + 4
4x = 3
x = 3/4