Multiply both sides of the equation by .

Remove parentheses.

Simplify each term.

Apply the distributive property.

Multiply by .

Simplify by adding numbers.

Add and .

Add and .

Multiply by .

Subtract from both sides of the equation.

Subtract from .

Multiply each term in by .

Multiply .

Multiply by .

Multiply by .

Multiply by .

Solve for y ((10+30)-(y-50))/4=20