<span>51-17=34</span>
<span>51:17=3</span>
<span></span>
<span>72-4=68</span>
<span>72:4=18</span>
<span>95-19=76</span>
<span>95:19=5</span>
<span>60-15=45</span>
<span>60:15=4</span>