anchor.diff:      <tbody>
           <tr>
                  <th>Descricao:</th>
  -            <th><%= @mercadorium.descricao %></th>
  +            <th><%= @mercadorium.preco*2 %></th>
              
          </tr>
   <tr>
  
positive.code:   <strong>Comprimento:</strong>
    <%= @mercadorium.comprimento %>
  </p>
  <%= @mercadorium.precofrete + ( @mercadorium.precofrete * 0.05) %>
  <%= 2 + 2 %>
  
    <strong>Precofrete:</strong>
    <%= @mercadorium.precofrete %>
  
negative.code:      
  
  
        
   <table class="table table-bordered">
      <thead>
          <tr>
  