Subtract the decimals by aligning the decimal points. Subtract hundredths from hundredths, tenths from tenths.<br><br>
&bull; 0.88 − 0.73<br>
&bull; 8 hundredths − 3 hundredths = 5 hundredths<br>
&bull; 8 tenths − 7 tenths = 1 tenth<br>
&bull; 0.88 − 0.73 = 0.15<br>
&bull; Check: 0.15 + 0.73 = 0.88 ✓<br><br>
Final Answer: 0.15