X will represent the missing number. Sum means 6, twice that number means multiply it by two, equal represents =, minus represents this, therefor the equation 6+2x=16-x represents the correct answer.
These are vertical angles so the opposite angle would equal each other. Let’s start by solving for x: 52=x-15 Add 15 to both sides: x=67 degrees Now let’s solve for y: 4y=128 Divide 4 to both sides: y=32 degrees