James o tlhoka go reka ditshakajwana tse dingwe tsa dintša tsa gagwe. Ntsha nngwe le nngwe e tlhoka setshakajwana se le sengwe. Gone jaanong James o na le ditshakajwana di le 4 tsa dintša di le 4, mme go na le dintša tse dingwe di le 8 mo go tsa gagwe. Morago ga go reka ditshakajwana, o boela kwao a fitlhela dintša di oketsegile gabedi go feta fa a tsamayang, mme a tshwanelwa ke go reka tse dingwe gape. Fa a boa gape, a fitlhela dintša di le 3 di ile, mme a sa tlhole a tlhoka ditshakajwana tseo. Ke ditshakajwana di le kae tse James a di tlhokang gotlhe?

Janey has 3 more than twice the number of books that Sally has. If Janey has 21 books, how many does Sally have?
James o na le 4+8=<<4+8=12>>12 ditshakajwana.
Go na le dintša di le 12*2=<<12*2=24>>24.
James o tlhoka go reka tse dingwe di le 24-12=<<24-12=12>>12.
Go na le ditshakajwana di le 36 gotlhe.
Go tlhokega ditshakajwana di le 36-3=<<36-3=33>>33 jaanong.
#### 33 

Let x be the number of books that Sally has
Janey has 3+2x books
3+2x=21
2x=18
x=<<9=9>>9
#### 9