03:56 duration 3 minutes 56 seconds
Prealgebra 4.3.11
Appearance of the Moon Application
05:47 duration 5 minutes 47 seconds
Prealgebra 4.4.2
3x/4 - 1/8 = 1/2
02:03 duration 2 minutes 3 seconds
Prealgebra 4.4.4
20 = 6 - 2x/3