Question

me ajudem por favor pois isso pode me ajuda passa de ano....


1)dertemine a raiz de cada equação a seguir(resolva descobrindo o valor do termo x desconhecido), considerando U=:

A)x-17=-9

B)2X=-7

C)3X+2X-11

d)2X=16

e)x/2=-5

f)2x+14=5x-1

g)4x-5=6x+11

h)5x+4-2x=26-3x

i)5m-7-2m-2=0

j)3.(x+2)+5=x+12

k)x+4.(x-1)=9-2.(x+3)

l)5.(3x-2)=2.(6+3)

m)2.(3x-1)+2.(3-x)=0

n)7.(x-1)=2.(3x+1)

o)20x=200

p)2.(x-2)=6

q)3.(x-2)-(1x)=13

r)7.(x+1)=2.(2.(3x-2)

me ajudem

Answer 1

A)x-17=-9
      x = -9 + 17
      x = 8

B)2X=-7
    x = -7/2

C)3X+2X-11
   Ops, esta está incompleta, verifique

d)2X=16
    x = 16/2
    x = 8

e)x/2=-5
    x = (-5).2
    x = -10

f)2x+14=5x-1
  2x-5x=-1-14
  -3x = -15
   x = 15/3
    x=5

g)4x-5=6x+11
    4x-6x=11+5
     -2x = 16
        x = -16/2
        x = -8

h)5x+4-2x=26-3x
    5x-2x+3x=26-4
    7x = 22
     x = 22/7

i)5m-7-2m-2=0
  5m-2m=7+2
  3m=9
m=9/3
m=3

j)3.(x+2)+5=x+12
   3x + 6 + 5 = x + 12
   3x - x = 12 -6 - 5
    2x = 1
    x = 1/2

k)x+4.(x-1)=9-2.(x+3)
   x + 4x - 4 = 9 -2x -6
   x + 4x + 2x =9 -6 + 4
    7x = 7
    x = 7/7
    x = 1

l)5.(3x-2)=2.(6+3)
   15x - 10 = 12x +6
    15x - 12x = 6 + 10
      3x = 16
     x = 16/3


m)2.(3x-1)+2.(3-x)=0
    6x - 2 +6 - 2x =0
    6x - 2x =2 - 6
    4x = -4
     x = - 4/4
     x = 1

n)7.(x-1)=2.(3x+1)
    7x - 7 = 6x + 2
    7x - 6x = 2 + 7
      x = 9

o)20x=200
    x = 200/20
    x = 10

p)2.(x-2)=6
    2x - 4 = 6
    2x = 6 + 4
    2x = 10
   x = 5
q)3.(x-2)-(1x)=13
    3x - 6 -x = 13
    3x - x = 13 - 6
    2x = 7
     x = 2/7

r)7.(x+1)=2.(2.(3x-2)
    7x + 7 = 12x - 8
    7x - 12x = -8 - 6
     -5x = -14
      x = 14/5