Answer
$A=9$
Work Step by Step
$A=kB$
$A=6; B=14$
$6=k(14)$
$k=\frac{6}{14}=\frac{3}{7}$
$A=\frac{3}{7}B$
$B=21$
$A=\frac{3}{7}(21)$
$A=9$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.