Solve for n
n=13
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11\times 2=n+9
Multiply both sides by 2.
22=n+9
Multiply 11 and 2 to get 22.
n+9=22
Swap sides so that all variable terms are on the left hand side.
n=22-9
Subtract 9 from both sides.
n=13
Subtract 9 from 22 to get 13.
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