1, 3/10=(3x9)/(10x9)=27/90, 4/9=(4x10)/(9x10)=40/90.2. 3/8=(3x3)/(8x3)=9/24, 5/6(=(5x4)/(6x4)=20/24.3. 7/12=(7x2)/(12x2)=14/24, 7/8=(7x3)/(8x3)=21/24.
