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