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27x+9=6x+30
Combine 3x and 3x to get 6x.
27x+9-6x=30
Subtract 6x from both sides.
21x+9=30
Combine 27x and -6x to get 21x.
21x=30-9
Subtract 9 from both sides.
21x=21
Subtract 9 from 30 to get 21.
x=\frac{21}{21}
Divide both sides by 21.
x=1
Divide 21 by 21 to get 1.