y=19-q

Rewrite the equation as 19-q=y.

19-q=y

Subtract 19 from both sides of the equation.

-q=y-19

Multiply each term in -q=y-19 by -1.

(-q)⋅-1=y⋅-1+(-19)⋅-1

Multiply (-q)⋅-1.

Multiply -1 by -1.

1q=y⋅-1+(-19)⋅-1

Multiply q by 1.

q=y⋅-1+(-19)⋅-1

q=y⋅-1+(-19)⋅-1

Simplify each term.

Move -1 to the left of y.

q=-1⋅y+(-19)⋅-1

Rewrite -1y as -y.

q=-y+(-19)⋅-1

Multiply -19 by -1.

q=-y+19

q=-y+19

q=-y+19

Solve for q y=19-q