Subtract from .

Simplify each term.

Apply the distributive property.

Multiply by .

Multiply by .

Add and .

Subtract from both sides of the equation.

Combine the opposite terms in .

Subtract from .

Subtract from .

Since , the equation will always be true for any value of .

All real numbers

The result can be shown in multiple forms.

All real numbers

Interval Notation:

Solve for y 21y-7-12y=3(3y-3)+2