81/4 - 6 1/2, what is the answer and work for this?

=1 3/4Solution 1 by separating partsRewriting our equation with parts separated=8+1/4−6−1/2Solving the whole number parts8−6=2Solving the fraction parts1/4−1/2=?Find the LCD of 1/4 and 1/2 and rewrite to solve with the equivalent fractions.
LCD = 4
1/4−2/4=−1/4Combining the whole and fraction parts2−1/4=1 3/4Solution by Formulas converting mixed numbers to fractions, our initial equation becomes,33/4−13/2
Applying the fractions formula for subtraction,=(33×2)−(13×4)/4×2=66−52/8=14/8Simplifying 14/8, the answer is=1 3/4

The discount is 8.70 . you dont tell us the percent of tax added so there is no way to find out, unless i'm not seeing anything. without tax its 37.70

59/96 is the ratio hope this not 100% sure though : /