Question

respuestas de
 ecuasiones

-2x=9-x
10=15-5x
3x-10=18-x
2-3x-5=5+8
4+x+2=6-2x+1

Answer 1

- 2 x = 9 - x
- 2 x + x = 9
- x = 9
x = - 9


10 = 15 - 5 x 
10 - 15 = - 5 x 
- 5 = - 5 x
- 5/-5 = x
1 = x

3 x - 10 = 18 - x
3 x + x = 18 + 10
4 x = 28
 x = 28/4
x = 7


2 - 3 x - 5 = 5 + 8
- 3 x = 13 + 5 - 2
- 3 x = 16
  x = - 16/3


4 + x + 2 = 6 - 2 x + 1
x + 2 x = 6 + 1 - 4 - 2
3 x = 1
x = 1/3

Answer 2

-2x=9-x
x-2x=9
-x=9

10=15-5x
-5x=15-10
-5x=5

3x-10=18-x
+x+3x=18+10
4x=28     

2-3x-5=5+8
-3x=5+8+5-2
-3x=16

4+x+2=6-2x+1
+2x+x=6+1-4-2
3x=1