Question

d)6(x-3)=7(x+1)-16 11.resolva as equaçoes: a)4x+9=x-6 b)5x-3+2=x-3x c)2x+4-x=2(x+1)

Answer 1

 11.resolva as equaçoes:

a) 4x+9=x-6 ==> 4X - X = - 6 - 9 ==> 3x = - 15 ==> x = - 5

b)5x-3+2=x-3x ==> 5x - x + 3x = + 1 ==> 7x = 1 ==> x = 1/7

c)2x+4-x=2(x+1) ==. x + 4 = 2x + 2==> 2x-x = 2-1 ==> x = 1

D)6(x-3)=7(x+1)-16 ==> 6x - 18 = 7x + 7 - 16 ==> 7x - 6x = - 18 - 7 + 16

x = - 9

Answer 2

Vamos lá :

a)4x+9=x-6
   4x - x = - 6 - 9
   3x = - 15
     x = - 15/3
     x = - 5

b)5x-3+2=x-3x
   5x + 2x = + 3 - 2
   7x = 1
     x = 1/7

c)2x+4-x=2(x+1)
   2x -x +4 = 2x + 2
   x - 2x = 2 - 4
  - x = - 2 .(-1)
     x = 2

d)6(x-3)=7(x+1)-16
    6x - 18 = 7x + 7 - 16
    6x - 7x = - 9 + 18
     -x = + 9 .(-1)
      x = -  9

Espero ter ajudado !!