8 x 7 = 56, 7 x 3 = 21, so 7
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7x - 56 and that is as far as you can go.
1 and 7
When figuring out what number goes both into 56 and 63, you should look at the factor pairs. 56: 1 x 56, 2 x 28, 4 x 14, 7 x 8 63: 1 x 63, 3 x 21, 7 x 9 7 goes into both 56 and 63.
The LCM of 21 and 56 is 168.
It is: 1