Question

Resolva as equaçoes de primeiro grau V=q

a. 8x+3+2x=x+7
b. 5+3x+6=7x-1+3
c. 8-5x+1=2x-1+3x
2.
a. 3(2+X)-X=6+X
b. -x+2(1-x)=5x+2

Answer 1

a. 8x+3+2x=x+7
    8x +2x -x = +7 -3
    9x = +4
      x = 4/9

b. 5+3x+6=7x-1+3
    3x -7x = -1 +3 -5 -6
    -4x = -8
       x = -8/-4
       x = +2

c. 8-5x+1=2x-1+3x
    -5x -2x -3x = -1 -8 -1
    -10x = -10
         x = -10/-10
         x = +1
2. 
a. 3(2+X)-X=6+X
     6 + 3x -x = 6 +x
      3x -x -x = 6 -6
       x = zero

b. -x+2(1-x)=5x+2
    -x +2 -2x = 5x +2
    -x -2x -5x = 2 -2
    -8x = zero
       x = zero