Select the statement that best justifies the conclusion based on the given information. if x + 5 = 15, then x = 10. addition property of equality subtraction property of equality multiplication property of equality substitution

subtraction property of equality

Step-by-step explanation:

The substraction property of equality is the property that states that you can solve the value of an equality by subtracting the value that is adding up to the variable by substracting it from the other side of the equality, an example would be like this:

By substracting form both sides the value that is along the "x" you get the value of the "x".

∞ this is your sign

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.