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