pinkpepe2
pinkpepe2
16-12-2014
Mathematics
Answered
A.
7
B.
42
C.
84
D.
294
Answer :
Аноним
Аноним
20-12-2014
[tex]LCD\left(\frac{9}{14};\ \frac{2}{21}\right)\\\\14=2\times\boxed7;\ 21=3\times\boxed7\\\\therefore\\\\LCD\left(\frac{9}{14};\ \frac{2}{21}\right)=\boxed7\times2\times3=\boxed{\boxed{42\leftarrow B}}[/tex]
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