trung binhf coongj cacs soos ler nhor hown 2012

C2:  timf 2 soos tuwj nhieen a vaf  b b't tichs cuar chungs lak 2940 vaf bcnn cuar chung  lak 210

dichj nhes ( bcnn : booij chung nhor nhaats )

timf cacs soos nguyeen x, y sao cho: y/3-1/x=1/3

134³⁴⁵

167⁴¹²

211² .316³

124³³

178³⁴⁵

457⁷⁷⁷

timf chuwx soos taanj cungf cuar cacs luyx thuwaf sau

1) tinh cacs gocs cuar △ ABC ,bieets

a) 3A=4B vaf A-B=20ddooj

b) B-C=10ddooj va C-A=10ddooj

Timf soos tuwj nhieen nhor nhaast cos ba chuxw soos chia cho 11 duw 5, chia cho 13 duw 8

Giups minhf gaasp, ai ddungs minhf tichs, khoong caanf suawr laij ddeef ddaau, minhf chir caafn loiwf giair vaf ddaps ans thooi nha moij nguoiwf. GAAPS GAAPS GAAPS

Tinhs toongr cacs soos hangj cos quy luaatj:

\(\dfrac{1}{2}+\dfrac{11}{6}+\dfrac{35}{12}+\dfrac{79}{20}+....+\dfrac{980099}{9900}\)

viet them chi so 0 vao ben phai phan thap phan cuar cacs so thap phan de cac phan thap phan co chu so bang nhau: 45,82= ; 35, 923=  ?

Giua tao và rêu thì cái nào uwu viêtj hown và uwu viêtj hown owr diêmr nào?