Question

resuelve las siguientes ecuaciones:
1) -3 +8 +10x-2=2x-14
2) 13-5x-8=2x+7(1-x)
3) 4-3(x+5)+1=2(x+5)
4) 10x-2(3x-4)=7x-22

Answer 1

1) - 3 + 8 +10x - 2 = 2x - 14
10x - 2x = - 14 + 3 - 8 + 2
8x = - 11 - 6
8x = - 17
x = - 17/8

2) 13x - 5x - 8 = 2x + 7 (1 - x )
13x - 5x - 8 = 2x + 7 - 7x
13x - 5x - 2x + 7x = 7 + 8
8x + 5x = 15
13x = 15
x = 15/13

3) 4 - 3 ( x + 5 ) + 1 = 2 ( x + 5)
4 - 3x - 15 + 1 = 2x + 10
- 3x - 2x = 10 - 4 + 15 - 1
- 5x = 6 + 14
- 5x = 20
x = 20/-5
x = - 4



4) 10x - 2 ( 3x - 4) = 7x - 22
10x - 6x + 8 = 7x - 22
10x - 6x - 7x = - 22 - 8
4x - 7x = - 30
- 3x = - 30
x = -30/-3
x = - 10
x = +10