Subtract the decimals by aligning the decimal points. Regroup where needed.<br><br>
&bull; 9.72 − 6.74<br>
&bull; 2 hundredths − 4 hundredths: not enough, regroup 1 tenth into 10 hundredths<br>
&bull; 9 ones 7 tenths 2 hundredths = 9 ones 6 tenths 12 hundredths<br>
&bull; 12 hundredths − 4 hundredths = 8 hundredths<br>
&bull; 6 tenths − 7 tenths: not enough, regroup 1 one into 10 tenths<br>
&bull; 9 ones 6 tenths = 8 ones 16 tenths<br>
&bull; 16 tenths − 7 tenths = 9 tenths<br>
&bull; 8 ones − 6 ones = 2 ones<br>
&bull; 9.72 − 6.74 = 2.98<br>
&bull; Check: 2.98 + 6.74 = 9.72 ✓<br><br>
Final Answer: 2.98