Simplify the following expressions

a. 2/5- 1/6 b. 3/7-7/14 c. 5/8- 2/3

1.) 2/5-1/6
Multiply the denominator until both denominators are the same
12/30 - 5/30
Subtract the numerator but NOT the denominator
Final 7/30

2.) 3/7-7/14
Multiply the denominator until both denominators are the same common denominator
6/14 - 7/14
Subtract the numerator but NOT the denominator
Final -1/14

3.) 5/8-2/3
Multiply the denominator until both denominators are the same
15/24 - 16/24
Subtract the numerator but NOT the denominator
Final -1/24

Byou start by adding them all and setting them equal to 180 since that is half of the total degrees in a circle.(2x+8) + (3x-14) + (3x-14) = 1808x-20 = 1808x = 200x = 25