309?
63
the answer of the average of 42, 57, and 63 is 54.
It is: (63+57)/2 = 60
The Least Common Multiple (LCM) of 63 and 57 is 1,197.
63
(57 x 63) + 28 = 3619
1+8x7=57 but (1+8)x7=63. I'm not sure what you're looking for.
57 x 63 + 28 = 3619
The GCF is 3.
57 + 57 + 38 + 38 = 190
6 plus 6 plus 63 plus 63 plus 36 plus 36 is equal to 210.