Solve for x
x=52
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81\times 2=3+x+2x+3
Multiply both sides by 2, the reciprocal of \frac{1}{2}.
162=3+x+2x+3
Multiply 81 and 2 to get 162.
162=3+3x+3
Combine x and 2x to get 3x.
162=6+3x
Add 3 and 3 to get 6.
6+3x=162
Swap sides so that all variable terms are on the left hand side.
3x=162-6
Subtract 6 from both sides.
3x=156
Subtract 6 from 162 to get 156.
x=\frac{156}{3}
Divide both sides by 3.
x=52
Divide 156 by 3 to get 52.
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