Solve for x
x=34
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\frac{99}{3}=x-1
Divide both sides by 3.
33=x-1
Divide 99 by 3 to get 33.
x-1=33
Swap sides so that all variable terms are on the left hand side.
x=33+1
Add 1 to both sides.
x=34
Add 33 and 1 to get 34.
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