AYUDA PORFAVORRRRRRR​

<div class="athena_tag_tk_ques_text_content" data-testid="answer_box_text"><p>es la B) 15</p><p><strong>Explicación paso a paso:</strong></p><p><img align="absmiddle" alt="2x + 40 = 70 \\ 2x = 30 \\ x = 15" class="athena_tag_latex_mark" id="TexFormula1" src="https://hw-cdn.snapquiz.net/seahk_ca7e2d16483fd316915df45ae0f82550.jpg" title="2x + 40 = 70 \\ 2x = 30 \\ x = 15"/></p><p></p></div>