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2x - 7 = 11

2x = 11 + 7

2x = 18 (divide both sides by 2 to get x)

2x/2 = 18/2

x = 9

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