Me pueden ayudar con estos ejercicios plis doy 39 ptos 5. 15x + ( - 6x + 5) - 2 - ( - x + 3) = - (7x + 23) - x + (3 - 2x) 7. 16x - [3x - (6 - 9x)] = 30x + [ - (3x + 2) - (x + 3)] 9. 9x - (5x + 1) - [2 + 8x - (7x - 5)] + 9x = 0.
En resumen
5) 15x - 6x + 5 - 2 + x - 3 = - 7x - 23 - x + 3 - 2x 15x - 6x + x + 7x + x + 2x = - 23 + 3 - 5 + 2 + 3 20x = - 28 + 8 20x = - 20 x = - 20 / 20 x = - 1 Entonces : 20.
5) 15x - 6x + 5 - 2 + x - 3 = - 7x - 23 - x + 3 - 2x
15x - 6x + x + 7x + x + 2x = - 23 + 3 - 5 + 2 + 3 20x = - 28 + 8 20x = - 20 x = - 20 / 20 x = - 1
Entonces : 20.
( - 1) = - 20 - 20 = - 20
7) 16x - [3x - 6 + 9x] = 30x + [ - 3x - 2 - x - 3] 16x - [12x - 6] = 30x + [ - 4x - 5] 16x - 12x + 6 = 30x - 4x - 5 4x + 6 = 26x - 5 4x - 26x = - 5 - 6 - 22x = - 11 x = - 11 / ( - 22) x = 1 / 2
Entonces : - 22.
1 / 2 = - 11 - 11 = - 11
9) 9x - 5x - 1 - [2 + 8x - 7x + 5] + 9x = 0 9x - 5x - 1 - 2 - 8x + 7x - 5 + 9x = 0 9x - 5x - 8x + 7x + 9x = 0 + 1 + 2 + 5 12x = 8 x = 8 / 12 x = 2 / 3
Entonces : 12.
2 / 3 = 8 24 / 3 = 8 8 = 8
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