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1x + 7 = 11

1x = 11 - 7

1x = 4 (divide both sides by 1 to get x)

1x/1 = 4/1

x = 4

| x+7=10 | | x+6=20 | | x+6=19 | | x+6=18 | | x+6=17 | | x+6=16 | | x+6=15 | | x+6=14 | | x+6=13 | | x+6=12 | | x+6=11 | | x+6=10 | | x+5=20 | | x+5=19 |

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