Answer:
option D
Transitive property of equality
Step-by-step explanation:
Transitive property of equality justifies the statement:
x=y+2 , y+2=8 then; x= 8
Transitive property of equality states that if we have two things that are equal to each other and the second thing is equal to a third thing then, the first thing is also equal to the third thing.
In mathematical terms: if a=b and b=c then a=c.
As per the given statement:
a = x , b= y+2 and c= 8
then,
a=b i.e, x=y+2 and
b=c i.e, y+2 =8 then
by using transitive property of equality, we get;
a=c i.e, x=8