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