Solve for x
x=31
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\frac{1800}{180}=x-21
Divide both sides by 180.
10=x-21
Divide 1800 by 180 to get 10.
x-21=10
Swap sides so that all variable terms are on the left hand side.
x=10+21
Add 21 to both sides.
x=31
Add 10 and 21 to get 31.
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