Tìm 2 số tự nhiên a,b biết rằng
a) BCNN ( a,b ) = 300
ƯCLN ( a,b ) =15
b) a*b=2940 ; BCNN (a,b) = 210
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8 tháng 12 2015
a) goi hai so la a ; b va a >b
vi UCLN(a,b)=18=>a=18k ; b=18q (trong do UCLN (k,q)=1 va k>q)
=>a+b=162
18k+18q =162
18(k+q)=162
k+q=9
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29 tháng 10 2016
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