Question

resolver estas ecuaciones
Tema:
Ecuaciones

Ejercicios:

 

1.-   3x
+ 4 = 2(x + 3)- 6(x + 5)

 

2.-  
3(x + 6)+ 5(2 - x) = 10 - 4(6 + 2x)

 

3.-  
2(x + 6)- 7x = 3x - 5x + 8

 

4.-   4x +
6(x - 4)- 2 = 2x + 3

5.-  
– 2 (2X – 3) + 3 (2X – 1) = 2 (X – 2X – 2)

 

6.-  
X + 2 (X – 1) = 4

 

7.-  
4 (x – 3) – 5 (x + 2) = 7 (3x – 1) + 29

 

8.-  
6x + 2 (1- x) = 3x – 8 + x – 2

 

9.-   3 (x + 1) = 2
(x + 3) – 1

10.-
3(6+x) = 2(x – 5)

Answer 1

1. 3(x+4)=2(x+3)-6(x+5)
3x+12=2x+6-6x-30
3x-2x+6x=-12+6-30
7x=-36
x= -36/7


2. 3(x+6)+5(2-x)=10-4(6+2x)
    3x+18+10-5x=10-24-8x
    3x-5x+8x     = 10-24-18-10
    6x               = -42
    x= - 42 /6

3. 2(x+6)-7x   =3x-5x+8
   2x+12-7x= 3x-5x+8
   2x-3x-7x+5x = - 12+8
  -3x =- 4  
 x=    4/3


4. 4x+6(x-4)-2 = 2x+3
   4x +6x -24-2 =2x+3
4x+6x-2x  =3+24+2
8x = 29
x= 29/8     


5. -2(2x-3)+3(2x-1)=2(x-2x-2)
-4x +6+6x-3 =2x-4x-4
-4x+6x-2x+4x = -4+3-6
4x =-7
x=-7/4

6. x+2 (x-1)=4
x+2x-2 =4
3x=4+2
x= 6/3
x=2

7. 4(x-3)-5(x+2) =7(3x-1)+29
4x-12-5x-10=21x-7+29
4x-5x-21x=-7+29+12+10
-22x=44
x= 44/-22

9. 3(x+1) =2(x+3) -1
3x +3 = 2x+6-1
3x-2x =6-1-3
x=2

10. 3(6+x) =2(x-5)
18+3x=2x-10
3x-2x =-18-10
x= -28