1+3n=10

Subtract 1 from both sides of the equation.

3n=10-1

Subtract 1 from 10.

3n=9

3n=9

Divide each term in 3n=9 by 3.

3n3=93

Cancel the common factor of 3.

Cancel the common factor.

3n3=93

Divide n by 1.

n=93

n=93

Divide 9 by 3.

n=3

n=3

Solve for n 1+3n=10