Multiple Choice. Name the property used to make the conclusion

1.) "If x + 7 = 23, then x = 16"

2.) "If 4x = 40, then x = 10"

3.) "If x = 7 and y = 7, then x = y"

4.) "If 4x = 28, then 28 = 4x"

5.) "If x - 24 = 25, then x = 49"


a. addition property of equality
b. subtraction property of equality
c. multiplication property of equality
d. division property of equality
e. symmetric property of equality
f. substitution property of equality

1. b
2. d
3. e
4. e
5. f