Learn a Fact: 3 x 7

1
3
x  2
2
5
x  2
3
2
x  8
4
5
x  3
5
7
x  2
6
2
x  2
7
3
x  3
8
1
x  2
9
2
x  6
10
2
x  9
11
3
x  7
12
6
x  2
13
3
x  4
14
9
x  2
15
2
x  2
16
3
x  3
17
6
x  3
18
4
x  2
19
6
x  0
20
3
x  5

Fact Navigator

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3

x7


21

7

x3


21

Move on to other facts:
3
X 6
18
3
X 8
24