-14=7+3u

Rewrite the equation as 7+3u=-14.

7+3u=-14

Subtract 7 from both sides of the equation.

3u=-14-7

Subtract 7 from -14.

3u=-21

3u=-21

Divide each term in 3u=-21 by 3.

3u3=-213

Cancel the common factor of 3.

Cancel the common factor.

3u3=-213

Divide u by 1.

u=-213

u=-213

Divide -21 by 3.

u=-7

u=-7

Solve for u -14=7+3u