Question

resolva as equações a seguir
a) 18x-43=65
b) 23x-16=14-17x
c) 10y-5.(1+y) =3.(2y-2)-20

Answer 1

a ) 18x-43=65
      18x = 65+43
      18x = 108  
      x=108/18
      x = 6

b )23x-16=14-17x
    23x+17x=14+16
    40x = 30
     x = 30/40

c )10y-5.(1+y) = 3.(2y-2)-20
    10y-5 -5y = 6y-6 -20
    10y-5y-6y = -6-20+5
     -1y = -21
      y= -21/-1
      y=21

Answer 2

a) 18x-43=65
     18x=65+43
     18x=108
     x=108/18
     x=6

b)23x-16=14-17x
  23x+17x=14+16
  40x=30
  x=30/40
  x=3/4

c)10y-5(1+y)=3(2y-2)-20
   10y-5-5y=6y-6-20
   10y-5y-6y=-6-20+5
    -1y=-21
     y=-21/-1
     y=21