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.
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7! sevenxfive=35, sevenxeight=56, and sevenxnine=63 ;)
The GCF is 1.
Nine will go into 63 seven times.
63/7 = 9 63 - 7 = 56 The two numbers are therefore 7 and 63.
Seven goes into both 63 and 77