3/8=1/2x3/43/8+5/8x3/4=1/2x3/4+5/8x3/4=3/4x(1/2+5/8)=3/4x9/8=27/32
=3/8+15/32=12/32+15/32=27/32
5/8)=3/4x9/8 =27/32