Answer:
4/7= 12/21- mutiply the fraction by 3
(4)(3)/(7/(3)= 12/21
4/7= 16/28 - mutiply by 4
4/7= 20/35- mutiply by 5
decimal form
x = 6.5
exact form
x = 13/2
mixed number form
x = 6 1/2