Question 242068
Hello, 
To add fractions, we need to have the denominators the same. For this particular problem let's get each fraction with 8 in the denominators. First reduce 10/20 to: 
1/2 + 1/8 +5/8  Then multiply 1/2 times 4/4 to give us:
4/8 + 1/8 +5/8  Add these and we get:
10/8 or 1 1/4
RJ Toftness
www.math-unlock.com