Question

Equação do primeiro grau;8x-5x=12

b)3x=15-2x

c)2x+1=5

d)18x-43=65

e)23x-16=14-17x

2x-8=3x-10

Answer 1

a) 8x - 5x = 12
       3x = 12
        x = 4
b) 3x = 15 - 2x
     3x + 2x = 15
     5x = 15
      x = 3
c) 2x +1 = 5
    2x = 5 - 1
    2x = 4
      x = 2
d)18x - 43 = 65
    18x = 65 +43
    18x= 108
       x = 6
e) 23x - 16 = 14 - 17x
   23x + 17x = 14+16
    40x = 30
        x 1,33
f) 2x - 8= 3x - 10
   2x -3x = -10 - 8
  (-1)  -x = -18
    x = 18