Ecuaciones de primer grado "Freakysabrosos"

1. 1. x + 4 = 28
   x=28-4
   x=24
   
   
   2. y - 6.5 = 31
   y=31+6.5
   y=37.5
   
   
   3. 8z = 40 + 3z
   8z-3z=40
   5z=40
   z=40/5
   z=8
   
   
   4. 10x = - 5x + 60
   10x+5x=60
   15x=60
   x=60/15
   x=4
   
   
   5. - 15y + 3 = - 36 - 18y
   -15y+18y=-36-3
   3y=-39
   y=-39/3
   y=-13
   
   
   6. 2x + 4 + (3x - 4) = 3x + 12
   2x+3x-3x=-4+4+12
   2x=12
   x=12/2
   x=6
   
   
   7. 4(3x + 2) - 8 = 5(2x + 3) + 5
   12x+8-8=10x+15+5
   12x-10x=15+5
   2x=20
   x=20/2
   x=10
   
   
   8. 15x - 40 - 5x - 20 = 0
   15x-5x=20+40
   10x=60
   x=60/10
   x=6
   
   
   9. 16 - ( - 2x - 4) - (5x - 3x + 2) = - 4x - ( - 8x + 2)
   16+2x+4-5x+3x-2=-4x+8x-2
   2x-5x+3x+4x-8x=-16-4+2-2
   -4x=-20
   x=-20/-4
   x=5
   
   
   
   
   
   
   10. - (7x - 2 + 12) + ( - 5x - 3x + 4) = - ( - x + 7) - (6x - 4 - 7)
   -7x+2-12-5x-3x+4=x-7-6x+4+7
   -7x-5x-3x-x+6x=-2+12-4-7+4+7
   -10x=10
   x=10/-10
   x=-1
   
   
   11. - 18 - [ 3(x + 2) + 4] = 21 - [ 6( - 2x - 2) + 1]
   -18-[3x+6+4]=21-[-12x-12+1]
   -18-3x-6-4=21+12x+12-1
   -3x-12x=18+6+4+21+12-1
   -15x=60
   x=60/-15
   x=-4