Because 21 is more than 1
1. 3/4
2. im not sure if it means after taking away 3/4, but if it is, its 10/4
x=10/4 and -30/4 i believe, im not too good with fractions, sorry if its wrong :((
January 12 because he will be on his 4th day of push ups and his 3rd day of situps