Solve for a
a=12
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3a-3=33
Swap sides so that all variable terms are on the left hand side.
3a=33+3
Add 3 to both sides.
3a=36
Add 33 and 3 to get 36.
a=\frac{36}{3}
Divide both sides by 3.
a=12
Divide 36 by 3 to get 12.
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