GWD20-Q5~求助NN~

evelyn205205

If k, m, and t are positive integers and k/6+m/4=t/12, do t and 12 have a common factor greater than 1 ?
(1)k is a multiple of 3.
(2)m is a multiple of 3.

答案是A。
这道题怎么入手啊，NN，
求指教，谢谢啦~

yaner11

2K+3m=t
if K is a multiple of 3, then 2*3a+3m=t,
3 is a factor of t.

t and 12 both have a factor of 3.

evelyn205205

2K+3m=t
if K is a multiple of 3, then 2*3a+3m=t,
3 is a factor of t.

t and 12 both have a factor of 3.

-- by 会员 yaner11 (2011/8/2 16:15:00)

明白了，谢谢你哦，yaner11~