Question

valor de x
a) 2x-4=3
b)5x-2=7+6
c) 10x+1=4-5
me ajudem

Answer 1

A) 2 x - 4 = 3
    2 x = 3 + 4
    2x = 7
      x = 7/2

B) 5 x - 2 = 7 + 6
    5 x - 2 = 13
    5 x = 13 + 2
    5 x = 15
       x = 15/5
       x =3

C) 10 x + 1 = 4 - 5
     10 x + 1 = -1
     10 x = -1 - 1
     10 x = -2
      x = -2/10