Donna, neil, and frank are siblings. donna is the oldest. frank’s age is 1/4 of donna’s age. right in equation to represent frank’s age f if diana‘s age is d years.

It would be 0 at least it should be

1. use commutative property to reorder the terms.2x+81=0.2. move the constant to right side by adding its opposite on both sides. 2x+81-81=0-81.2x=(-81).3. divide the equation on both sides.2x ÷ 2 = 81 ÷ 2.x = -81/2. your answer is -81/2. if you need to simplify it into a decimal, it’s -40.5.