Answer: 
Step-by-step explanation:
For this exercise it is important to remember:
- The Distributive property:
- The multiplication of signs:
Then, given the following expression:
You need to apply the Distributive property. Then:
Now you can combine like terms (or add the like terms). Then you get:
Therefore, the equivalent expression created by combining like terms, is:
Answer: 18
Step-by-step explanation: If there were 18 seats in the row, it would be an even amount in each row, the same amount in each row, and would see everybody.
Vertical angles are always congruent, which means that they are equal. Adjacent angles are angles that come out of the same vertex. Adjacent angles share a common ray and do not overlap. The size of the angle xzy in the picture above is the sum of the angles A and B.
Answer:
We need to see the system of equations.
Step-by-step explanation:
Show us the system of equations.
