Answer: What does the page say?
Step-by-step explanation:
<span>To get the Greates Common Factor (GCF) of 21 and 40 we need to factor each value first and then we choose all the copies of factors and multiply them:
<span><span>21: 3 7</span><span>40: 222 5 </span><span>GCF: </span></span>The Greates Common Factor (GCF) is: 1<span>
</span></span>