Question

Equação resolva:
a)2x + 4 = x + 25
b)3 + 2y + y = 1
c)4x + 2x -5 = 10 -2x
d)4y + 20 = y + 31
e)5x + x + 2x -20 = 50 -x

Answer 1

a) 2x + 4 = x + 25
    2x - x = 25 - 4
    x = 21

b) 3 + 2y + y = 1
    3y = 1 - 3
      y = -2/3

c) 4x + 2x - 5 = 10 - 2x
   8x = 15
     x = 15/8

d) 4y + 20 = y + 31
    3y = 11
      y = 11/3

e) 5x + x + 2x - 20 = 50 - x
    9x = 70
      x = 70/9