How do you solve x- \frac { 5} { 7} = 6\frac { 2} { 3}?

1 Answer
Mar 13, 2017

x=155/21

or

x= 78/21

Explanation:

x-5/7=(6*3+2)/3

x-5/7=20/3

x-(5*3)/(7*3)=(20*7)/(3*7)

x-15/21=140/21

x=155/21

If needed as a mixed number:

155//21=7 remainder 8

x= 78/21