Ecuaciones con parentesis : 1. - 20(x + 1) = - 2(5x - 5) + 5(4x - 1) 2. - 2(3x - 5) + 8(x + 2) = - 3( - 5x + 7) 3. - 4(2x - 3) - (6x + 4) = 8(x - 3) 4. - 10( - 2x + 3) = 11( - x + 3) 5. - 5(1 + x) + 7 = 2(8x + 9) - (17x + 18) 6. - 4( - 8 + x) = x - ( - x + 15) - 23 7. - 3x = - (15 + 8x) + 6x.
En resumen
1. - 20(x + 1) = - 2(5x - 5) + 5(4x - 1) 20x + 20 = - 10x + 10 + 20x - 5 20x + 10x - 20x = 10 - 5 - 20 10x = - 15 10x / 10 = - 15 / 10 se simplifica = x = - 3 / 2 2.
1. - 20(x + 1) = - 2(5x - 5) + 5(4x - 1)
20x + 20 = - 10x + 10 + 20x - 5
20x + 10x - 20x = 10 - 5 - 20
10x = - 15
10x / 10 = - 15 / 10
se simplifica =
x = - 3 / 2 2.
- 2(3x - 5) + 8(x + 2) = - 3( - 5x + 7) - 6x + 10 + 8x + 16 = + 15x - 21 - 6x + 8x - 15x = - 21 - 10 - 16
8x - 21x = - 47 - 13x = - 47
13x / 13 = 47 / 13
x = - 47 / 13
3.
- 4(2x - 3) - (6x + 4) = 8(x - 3)
8x - 12 - 6x - 4 = 8x - 24
8x - 6x - 8x = - 24 + 12 + 4
8x - 14x = - 24 + 16 - 6x = - 8
6x / 6 = 8 / 6
x = 4 / 3
4.
- 10( - 2x + 3) = 11( - x + 3)
20x - 30 = - 11x + 33
20x + 11x = 33 + 30
31x = 63
31x / 31 = 63 / 31
5.
- 5(1 + x) + 7 = 2(8x + 9) - (17x + 18) - 5 - 5x + 7 = 16x + 18 - 17x - 18 - 5x - 16x + 17x = 18 - 18 + 5 - 7 - 21x + 17x = - 2 - 4x = 2
4x / 4 = - 2 / 4
x = - 2
6.
- 4( - 8 + x) = x - ( - x + 15) - 23
32 - 4x = x + x - 15 - 23 - 4x - x - x = - 15 - 23 - 32 - 6x = - 70
6x / 6 = 70 / 6
x = 70 / 6
7.
- 3x = - (15 + 8x) + 6x
3x = - 15 - 8x + 6x
3x + 8x - 6x = - 15
5x = - 15
5x / 5 = - 15 / 5
x = - 3
pd : espero que te haya ayudado , alguna duda que tengas me dices.