2 1/4 - 2 1/4 * 1 1/3 = ?
2 1/4 - 2 1/4 * 1 1/3 =9/4- 9/4* 4/3=9/4- 3/1*1/1=9/4-3/1=9/4-12/4=-3/4
2 1/4 * 1 1/3 = 9/4 * 4/3 = 3
9/4 - 3 = 9/4 - 12/4 = - 3/4