What's the difference between three times of three fifths minus half of the reciprocal of five eighths

What's the difference between three times of three fifths minus half of the reciprocal of five eighths


3/5*3-8/5*1/2
=9/5-4/5
=1



Three tenths plus five eighths minus three fifths, the difference is ()


13/40



What's the difference between 10 times the reciprocal of five out of seven minus half of seven out of eight?


5/7 .10 —7/8 .1/2
=50/7—7/16
=