66.6% of 720
(x+2 3/13)-1 7/26=4 5/39
x=
(x+z)²-(x-z)²
2 over 3
2 oover 3
14 2/7 - 10 6/7=
3 over 4 added by 3 over 7
40% of 80
3 over 4 multiply by 3 over 7
