(7/10 + 1/2) * 5/8 -1/2
parenthesis first....common denominator is 10
(7/10 + 5/10) * 5/8 - 1/2
12/10 * 5/8 - 1/2...reduce when u can
6/5 * 5/8 - 1/2
now we multiply
30/40 - 1/2
3/4 - 1/2
now we subtract...common denominator is 4
3/4 - 2/4 = 1/4 <== ur answer