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 Answer: 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 Answer: -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 Answer: -1/24
