Question

Resolva As Equações

a) x+1=2
b)2x-4=4
c)5+x=23
d)3x+4x+1=50
e) 6 + 4 x + 2x = 42
f) 5 x + 4 + 3x = 18
g) x + 2x - 4 = 5x + 6
h) 2 x - 4x + 3 x = 5 - 3x - X
i) X + 15 = 30 - 2x
j) x + 2x - 6 = 0
k) 3 x - x +5 = 18
l) 5 x + 7 = 2x + 13
m) 5 x + 5 = 4x - 1
n) 4 x -11 = 3x + 1
o)3(x-1)=8
p)5(1-x)=7
q)2(4x-3)=6x-1
r)2(x+1)=9
s)5(2x+1)=4(x-1)
t)4(x-1)=3(x-2)

Answer 1

a) x + 1 = 2
    x = 2 - 1
    x = 1

b) 2x - 4 = 4
    2x = 4 + 4
      x = 4

c) 5 + x = 23
    x = 23 -5
    x = 18

d) 3x + 4x + 1 = 50
    7x = 49
      x = 7

e) 6 + 4x + 2x = 42
    6x = 36
      x = 6

f) 5x + 4 + 3x = 18
   8x = 14
     x = 7/4

g) x + 2x - 4 = 5x + 6
    - 4 - 6 = 2x
     - 5 = x

h) 2x - 4x + 3x = 5 - 3x - x
    9x = 5
      x = 5/9

i) x + 15 = 30 - 2x
   x + 2x = 15
           x = 5

j) x + 2x - 6 = 0
  3x = 6
    x = 2

k)  3 x - x +5 = 18
     2x = 13
       x = 13/2

l)  5 x + 7 = 2x + 13
    3x = 6
      x = 2

m)  5 x + 5 = 4x - 1 
      x = - 6

n) 4 x -11 = 3x + 1     3x = 12
       x = 4

o)  3(x-1)=8
     3x - 3 = 8
     3x = 11
       x = 11/3

p)5(1-x)=7
   5 - 5x = 7
   5 - 7 = 5x
   -2/5 = x


q)2(4x-3)=6x-1
   8x - 6 = 6x - 1 
   2x = 5
     x = 5/2

r)2(x+1)=9
  2x + 2 = 9
  2x = 7
    x = 7/2

s)5(2x+1)=4(x-1)
   10x + 5 = 4x - 4
   6x = -9
     x = -3/2


t)4(x-1)=3(x-2)  4x - 4 = 3x - 6
  x = -2