63/81 = 21/27 = 7/9
Equivalent fractions of 21/27 = 7/9, 42/54, 63/81,...
270/630 and 2700000/6300000 are equivalent.
They are: 3/7 and 2/9 are the equivalent 27/63 and 14/63
27 × 63 = 1,701
-21
the GCF of 27 and 63 is 9
(63 ÷ 7) × 3 = 27
'63'
27:1, 3, 9, 27 63? idk. XD
The question asks about "these expressions" suggesting that a list of expression is given. In such circumstances would it be too much to expect that you make sure that there is something that is following?
LCM(27, 63) = 189