Name the property of equality that justifies: if x=3 and y=x+5, then y=8
a. addition property of equality
b. distributive propery of equality
c. substitution property of equality
d. reflexive property of equality

C. Substitution Property of Equality

Step-by-step explanation:

The substitution property of equality says that if a=b, then 'b' can be substituted in the place of 'a' or 'a' can be substituted in the place of 'b'.

For example : If a= 7 and b=a-2

Then we substitute a=7 , we get b=7-2=5

Similarly, we are given that If x=3 and y=x+5, then y=8

Here the value of x is substituted as 3, then y=3+5=8

Hence, the property of equality that justifies given statement : Substitution Property of Equality

x=30

step-by-step explanation:

idk

step-by-step explanation: i just don't