Question

Responda as equaçoes:
a )4x-98=x/2
b) -5x+13=4(8-x)
c) 3x+87=3+87x
d) 2x+3(4x²+x-1)=12x²

Answer 1

c) 3x + 87 = 3 + 87x
    3x - 87x = 3 - 87 
    - 84x = -84 × ( -1 )
      84x = 84
      x = 84
            ----
             84
     x = 1