Select from the drop-down menu to correctly identify the property shown. 5.2+(−2.4+(−3.9))=(5.2+(−2.4))+(−3. 9) what type of property is this? ?

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

How is this equation completed? i cannot find any examples in the book.

What is the value of x? enter your answer in the box. x =