Question

Câu 5. Tìm ƯCLN(60 ; 90; 135)
Trả lời:
60 = …………
90 = ………….
135 = ……………
ƯCLN(60; 90; 135) = ……………………

Answer 1

Ta có:

60 = 2^2 .3.5;     90 = 2.3^2.5;     135 = 3^3 .5

<-> ƯCLN(60, 90, 135) = 3.5 = 15.

ƯC(60, 90, 135) = Ư(15) = {1, 3, 5, 15}

--thoT-T--

Answer 2

\(60=2^2.3.5\)

\(90=2.3^2.5\)

\(135=3^3.5\)

\(\Rightarrow ƯCLN(60;90;135)=3.5=15\)