document.write('<p>&nbsp;<img src=\"http://www.alatiku.com/d/file/shiti/7411e64d3a4345ae9103a6a0edd57813.jpg\" alt=\"360截图20180729205653251.jpg\" width=\"373\" height=\"382\" /><span style=\"color: transparent; font-family: serif; font-size: 20px; white-space: pre;\">28+33+26=87（人）</span></p><p>28+33+26=87（人）87-15-13-17=42（人）42+6=48（人）答：该班共有 48 人。</p>');