Question

1) Simplifique as equaçoes e resolva

a) x+2(x+1)+3=5-4(-x -3)

Answer 1

a) x+2(x+1)+3=5-4(-x -3)
x + 2x + 2 +3 = 5 + 4x + 12
x+ 2x + 4x = 5 + 12 -2 - 3
3x + 4x = 17 - 5
7x = 12
x= $\frac{12}{7}$

Answer 2

 x+2(x+1)+3=5-4(-x -3)
 x+2x+2+3=5+4x+12
x+2x-4x=5+12-2-3
  - x = 12(-1)
 x = - 12