Form within Form [duplicate]

Good morning!

I checked the link, Form inside Form , but That's not what I'm looking for.

I need to know if a form inside the other with two buttons and two different actions works.

Example:

<form type="post" action="dados_cadastrais.php">

    <form type="post" action="negocicao.php">
         <input type="text" value="nome" />
         <input type="submit" value="Enviar">
    </form>

    <input type="text" value="Parcela">
    <input type="submit" value="Salvar">
</form>

Actual project code:

               <form method="post" action="<?= base_url()?>admin/credores/adicionar" id="form_credor_adicionar">
                    <div class="modal-body" style="padding-bottom: 0px;"> <!--padding 0px -->
                        <div class="row">
                            <div class="form-group col-sm-4">
                                <label for="cnpj">CNPJ</label>
                                <input type="text" id="cnpj" name="cnpj" class="form-control" autocomplete="off" placeholder="000.000.000-00" value="<?php echo set_value('cnpj'); ?>" >
                            </div>
                            <div class="form-group col-sm-6">
                                <label for="nome">Nome</label>
                                <input type="text" id="nome" name="nome" class="firstname form-control" autocomplete="off" onkeyup="maiuscula('.firstname')" placeholder="Informe o nome do devedor" value="<?php echo set_value('nome'); ?>" >                             
                            </div>
                            <div class="form-group col-sm-2">
                                <label for="genero" class="control-label">Ativo</label>
                                <select id="genero" name="genero" class="form-control">
                                    <option value="" selected="selected">Selecione</option>
                                    <option value="1">Sim</option>
                                    <option value="0">Não</option>
                                </select>
                            </div>
                            <div class="form-group col-sm-12" style="margin-bottom: 0px;"> <!--margem 0px -->
                                <div class="card card-border nav-tabs-custom">
                                    <ul class="nav nav-tabs" id="myTab">
                                        <li class="active"><a href="#dados_cadastrais" data-toggle="tab" aria-expanded="true"><i class="fa fa-user" style="color: #A4BE40"></i> Dados Cadastrais</a></li>
                                        <li class=""><a href="#tabela_negociacao" data-toggle="tab" aria-expanded="false" ><i class="fa fa-map-marker" style="color: #E9573F"></i> Tabela de Negociação</a></li>
                                    </ul>
                                    <div class="tab-content" style="">
                                        <?php include 'include/tab_adicionar_dados_cadastrais.php';?>
                                        <?php include 'include/tab_adicionar_tabela_negociacao.php';?>
                                    </div>
                                </div>
                            </div>      
                        </div>
                    </div>
                    <div class="modal-footer clearfix">                         
                        <button type="submit" class="btn btn-primary btn-flat pull-left"><i class="fa fa-save"></i> Salvar</button>
                        <button type="button" class="btn btn-default btn-flat" onclick="limpar_campos(this.form)"><i class="fa fa-refresh"></i> Limpar</button>
                        <button type="button" class="btn btn-default btn-flat" data-dismiss="modal"><i class="fa fa-times"></i> Cancelar</button>                           
                    </div>
                </form>