by x(x+20) gives 15x=5(x+20) Distributing the 5 over the values within the parentheses yields 15x=5x+100 and then subtracting 5x from each side gives 10x=100 Finally, dividing both sides by 10 gives x=10. Therefore, the value of
x
5
is
10
5
=2 Choice A is incorrect because it is the value of x,not
x
5
Choices B and D are incorrect and may be the result of errors in arithmetic operations on the given equation.