SAT Question d9d83c02: Linear Equations In One Variable answer and explanation with Desmos solution

Choice D is correct. To solve the equation, use the distributive property to multiply on the right-hand side of the equation which gives $w-10=2w+10$. Subtract $w$ from both sides of the equation, which gives $-10=w+10$. Finally, subtract $10$ from both sides of the equation, which gives $-20=w$.