if she cut 3 inches off the length, that makes it 9 inches. the original rectangle was 2 inches longer. so subtract 2 from 9 and 7. she needs to have the width 7 inches.
Easy. Simple math. If she has 12 - 3 that equal 9. Now it’s length 9 and width 10. To get similar to original that would be length 9 width 7. Because you’d subtract two off of 10
