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