4 3/8*1 2/5-1 2/8 (6 1/2-4 1/4):2 1/2

Question

4 3/8*1 2/5-1 2/8 (6 1/2-4 1/4):2 1/2

Answer 1

4 3/8*1 2/5-1 2/8*(6 1/2-4 1/4):2 1/2=35/8-7/5-10/8*(13/2-17/4):5/2=49/8-10/8*(26/4-17/4)*2/5=49/8-108*9/4*2/5=49/8-45/16*2/5=49/8-9/8=40/8=5