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1x + 2 = 13

1x = 13 - 2

1x = 11 (divide both sides by 1 to get x)

1x/1 = 11/1

x = 11

| x+2=12 | | x+2=11 | | x+2=10 | | x+1=20 | | x+1=19 | | x+1=18 | | x+1=17 | | x+1=16 | | x+1=15 | | x+1=14 | | x+1=13 | | x+1=12 | | x+1=11 | | x+1=10 |

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