Question

determina el valor de x en las siguientes ecuaciones
1) 4x=2x-12
2) 8x-24=5x
3) 7x+12=4x-17
4) 3x-25= x-5
5) 5x+13=10x+12
6) 12x-10= menos 11 mas 9x
7) 36-6x=34-4x

Answer 1

4x=2x-12
4x - 2x = - 12
2x = - 12
x = - 12/2
x = - 6


8x-24=5x
8x - 5x = 24
3x = 24
x = 24/3
x = 8


7x+12=4x-17
7x - 4x = - 17 - 12
3x = - 29
x = - 29/3


 3x-25= x-5
3x - x = - 5 + 25
2x = 20
x = 20/2
x = 10


 5x+13=10x+12
5x - 10x = 12 - 13
- 5x = - 1
x = - 1/-5
x = 1/5


12x-10= - 11 + 9x
12x - 9x = - 11 + 10
3x = - 1
x = - 1/3


36-6x=34-4x
- 6x + 4x = 34 - 36
- 2x = - 2
x = - 2/-2
x = 1