Ngày tải lên :
28/06/2014, 19:20
... subtracted from − 4a to obtain a? (− 4a) − (− 3a) =? Examine now these results expressed in another form 33 From take 5a 3a 2a To add 5a − 3a 2a From take 4a 7a − 3a To add 4a − 7a − 3a From take 2a 5a ... 11x 5ab, 6ab, ab, 13ab −3ax3 , −5ax3 , −9ax3 , −ax3 −x, −5x, −11x, −25x − 2a2 , 5a2 , 3a2 , − 7a2 , 1 1a2 2abc2 , −5abc2 , abc2 , −8abc2 5x2 , 3ab, −2ab, − 4a2 , 5ab, − 2a2 5ax, −3bc, −2ax, 7ax, ... times as many as John, and Charles has d less than five times as many as James How many has Charles? 30 A man bought a pounds of meat at a cents a pound, and handed the butcher an x-dollar bill...