It is not 7 it is 12. 3x4 = 12
Answer:
a=
b=5
Step-by-step explanation:
we are given
+
=ax+
we will compare both sides of equaion
=
comparing both sides we get
b=5
and
=ax
a=
hence
a=
and
b=5
By looking at the current state of the question, the answer is associative property because that seems to be the only option present