Answer :

Problem: 7/10 - 1/2
1/2 = x/10       Find the common denominator
1/2 = 5/10      
Subtract the numerators
7-5
Answer: 2/10
Simplest form: 1/5
[tex] \frac{7}{10} - \frac{1}{2} \\ \\ \frac{7x1}{10x1}= \frac{7}{10} \\ \\ \frac{1x5}{2x5}= \frac{5}{10} \\ \\ \frac{7}{10} - \frac{5}{10}= \frac{2}{10} \\ \\ \frac{2:2}{10:2}= \frac{1}{5} \\ \\ Solution: \frac{1}{5} [/tex]