Answer:
Know the properties of vertical angles.
Step-by-step explanation:
Vertical angles are equal to each other, so we must make them equal to each other in an equation:
6x+2=80
6x=78
x=13
Answer:
i believe the answer is 6 because 21 divided by 3.5 is 6 Step-by-step explanation:
Answer:
Step-by-step explanation:
If the student got a true statement, it is an identity
example, ending with x=x or 10=10 means it is an identity
if the student ended up with a false statement, there is no solution
example, 10=2