Question
Subtract the first term from the second: $3 \frac{1}{2} mn , 8 \frac{1}{2} nm$
✓
Answer
$8 \frac{1}{2} nm -3 \frac{1}{2} mn$
$=\frac{17}{2} nm -\frac{7}{2} mn$
$=\frac{17 nm -7 mn }{2}$
$=\frac{10 mn }{2}$
$=5 mn$
$=\frac{17}{2} nm -\frac{7}{2} mn$
$=\frac{17 nm -7 mn }{2}$
$=\frac{10 mn }{2}$
$=5 mn$
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