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