3 squared is 9 and so 9n = 63 which means n = 7
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63 x 3 = 189
Well 63 divided by 3 equals 21. So 3 times 21 equals 63. 21 is that number.
3 x 21 = 63
The number 3 can go in to 63 21 times. 63 divided by 3 equals 21.
21 times 3 equals 63