Solve for a 3a-2=18-a

3a-2=18-a

Move all terms containing a to the left side of the equation.

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Add a to both sides of the equation.

3a-2+a=18

Add 3a and a.

4a-2=18

Move all terms not containing a to the right side of the equation.

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Add 2 to both sides of the equation.

4a=18+2

Add 18 and 2.

4a=20

Divide each term by 4 and simplify.

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Divide each term in 4a=20 by 4.

4a4=204

Cancel the common factor of 4.

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Cancel the common factor.

4a4=204

Divide a by 1.

a=204

Divide 20 by 4.

a=5

Solve for a 3a-2=18-a